Hahahaha yes yes I could most easily walk. But if I'm already out doing stuff or hauling a lot of crap around, then it's somewhat cumbersome to walk a mile and a half with a bunch of sopping wet towels to the laundromat.
Ninja edit: I walk more frequently than you guys think! I typically walk to the grocery store. However, every day I walk up and down a 300 something foot escalator and then about 3/4 mile to my office. Not to mention the 1/3 mile from my house to the Metro!