Owning a small air compressor is going to save you a lot of trouble somewhere along the way. Blowing up air mattresses for camping or inflating bicycle tires are just two of the many ways in which one of these items could prove useful.
What you are really doing when you buy one of these is to purchase a little bit of time. One day or another, you will be able to have that air compressor pay you back by saving you some time when it really counts.
Perhaps you have to pick up the kids from school and notice your tire is low. Out at the beach, blowing up a sea horse or beach ball is a lot quicker and easier on the lungs if you can do it with an air compressor. Once you have one, you’ll find yourself wondering why you never bought one sooner.