We have a two car garage. I painted lines for one parking space in the middle so the kids would know to keep their bikes etc. off to the side. Along the sides we have storage, tools, the lawn mower and other gardening stuff, a freezer, the garbage cans, and all our outdoor recreation stuff. At one point, we had to fit exercise equipment there too.
Even though we always have room for one car, we only pull a car in if DH is doing maintenance or if it is freezing temperatures. That's what driveways are for! We much prefer having the space open for projects. I'm just about to start painting some cabinets and that's where I'll be working.
I had never really known anyone who actually used their garage to park cars (unless they had 3 or more stalls) until I started reading this forum. Where I live, no one has basements.