A year or more ago my wife and I bought a 1990 Mazda Miata, I have put a ton of work into it getting it up and running, it still needs paint, and could use a roll bar, but I dont want to put anymore money into it. We also just had our first kid and moved, so the car is useless to take my new son around in, but it is great for driving to work and running out to the store, or when I down my truck for a few days to do something, like suspension or what not. Having a 3rd car is great, but can be a hassle.
I found a buyer for the car, and my wife wants it gone... I still like it (you can see the build link in my signature). My wife said if I sell the car I can get a plate bumper for my Tacoma, a air compressor and a nice gun safe that I need now that we have a little one, and still have some left for savings.
I am talking myself into selling it, but not sure, having a beater car, a spare car, and a convertible is great. I also just finished suspension, clutch, timing belt and wheels/tires, so it has a lot in it.
I have my Tacoma ('06), and my wife has a CR-V ('08) and we share the Miata ('90).