1. They are a great deal of fun to use.
2. They are useful if you get lost and you have a paper map that gives UTM or lat/lon coordinates or have electronic maps available.
3. You can actually follow yourself on a map in real time display which allows planning turns, stops, etc if your unit has built in maps or can output to a PC or PDA with maps.
4. You can answer the question "Are we there yet?"
5. You can find where you left your car.
6. Lets you tell the AAA where to send the tow truck.
7. You can set favorite locations and see directions to get there.
8. You can record the exact path you took to get somewhere and play it back later for someone else to see.
9. You can prove how fast you were going when stopped by the cops.
10. You can use it as a compass (if you're moving).
11. When camping, you can use it to find your camp when you go on a hike or to town.
12. You can use it to estimate arrival times.
13. Did I mention they are fun?
14. You can calibrate your speedometer. (yes, a GPS is more accurate than most speedometers)
15. You can use it as a speedometer if yours is missing or broken.
16. You can use it as a trip meter (some models).
17. With the right database you can find restaurants and other things.
18. You can plan a trip ahead of time and the unit will even tell you where to turn.
19. You can use the info from a GPS to program your dbs satellite receiver.
20. If it is connected to a cell phone you can give the police your cell phone number and they can track your stolen vehicle (some extra cost accessories required).
21. You can locate the spot where the fish were biting.
22. You can amaze your friends.
23. You can find your altitude within a hundred feet.
24. You can find out exactly what time it is.
25. You can go back the same way you came easily.
26. If something flies out of the window you can mark the spot and return to the exact place.
27. You can amuse yourself on public transportation (planes, boats, rail).
28. You can use it to learn something about navigation.
29. You can remember the location of that place you only go to once a year.
30. It can be a great navigation calculator. For example it will tell you how far apart two places are if you know their locations.
31. Many units can tell you when the sun will rise and set.
32. Find a place when you only have the address. Some units will even guide you.
33. Find the nearest restaurant or gas station if you or your car are low on fuel.
34. Some GPS units have close to a whole set of yellow pages on board and they will find things for you and show you how to get there.

Marine users can find plenty of uses from the above list plus a few more.

1. If someone falls overboard you can return and find him or her.
2. In conjunction with a chart you can avoid shallow water.
3. You can avoid submerged objects if you know their location.
4. You can know where you are without any landmarks.
5. They are just as much fun on a boat.
6. You can find the next buoy in the race or the trip home.
7. You can see if your drifting.
8. You can hook it to your fish finder.
9. You can see true speed and distance over the ground instead of water speed.
10. You can see the direction you are going instead of the direction you are pointing.
11. You can win log races (if they let you use it).
12. You can use it to drive your self steering system.
    

Other uses for a GPS include:

1. Documenting the location of that neat photograph.
2. Having something useful to talk about on your home video.
3. Doing some amateur surveying. (A consumer GPS is not accurate enough for legal surveying.)
4. Finding the altitude of your house.
5. If you have a combined GPS/cell phone your friends can watch you move around on the internet if you wish.
6. A couple of combined GPS/frs walkie talkies can be used to keep contact and help if one person gets lost. Good for keeping track of your kids.
7. Helps you justify the PDA you wanted to buy since they can work together.
8. Instantly find your location on an electronic map.
9. You can use the backlight for a flashlight in a pinch.
10. Figuring out where the cruise ship or airplane is.
11. Setting your clock. (GPS time is more accurate than the TV.)
12. Teaching your kids about maps, navigation, and geography.

There are plenty of other users as well. These include aviators, hikers, bicyclists, motorcyclists, skiers, joggers, fishermen, hotair balloonists, kayakers, surveyors, astronomers, and lots more.

...And, how about hobbies and Games

A GPS can be used to enhance your hobbies or to develop some new ones. Here is a list of some unusual items.

1. Some folks install a GPS in their model airplanes. Later, after the flight is over they can download a track and see where it went.
2. Ever wonder where your dog goes at night? Install a GPS on his back and when he returns you can find out.
3. You can search for confluences. These are spots on the earth where the lat/lon numbers all zero out to an exact whole degrees. There are folks that think these are fun places to find! You can also look for government survey markers scattered around the world.
4. Other folks have set up hidden treasures (called geocaches) that can be located by GPS. Don't expect to find a million dollars though.
5. Maybe your next progressive dinner won't include any traditional addresses but only lat/lon coordinates. No cheating by saying whose house it is.
6. Some cameras can include location data right on the picture or perhaps you can just take a picture with your GPS in the foreground.
7. Golfers can use a GPS to display the distance to the pin. Useful for picking the right club to use.
8. A hunter might find that deer stand he/she used last year.
9. A fisherman can find the location of that secret spot where they are always biting.
10. Some of the newer GPS units even have games built in.

What about your job?

Certainly many jobs spring to mind when thinking about a GPS. For example a surveyor, a pilot, or a ships captain, but how about a few more unusual uses.

1. How about for a rural newspaper route? Perhaps the papers would even get delivered when you were sick.
2. How about a real estate agent who wants to show a house in a strange neighborhood without getting you and the client lost?
3. How about any job that collects field data? Wouldn't the location where the data was found be useful?
4. How about a farmer? Useful to manage those microclimates on your property.
5. A forest ranger can find lots of uses, calling in fire support or search and rescue help.
6. Trucking firms may use them for electronic dispatching.
7. Besides, why shouldn't work be fun too?