Well, rain and snow don't bug me so much. Also, I'm only living in Portland temporarily now. I go to school in Missoula, Montana. Colder, but the town is compact and flat, and I live close to campus and downtown, and three miles from work, so being car-free is ridiculously easy.

Being young and a student without the need to care for children, etcetera, or have to carry large objects with any regularity, car ownership would simply be an unnecessary expense/complication in my life. Plus I really like riding bikes.