In Amsterdam I biked because it was the fastest, most efficient way to get most places. In Lansing, though, almost everything is faster and easier with a car. Yet, Matthijs and I both choose to bike here. We do it because it's cheaper - parking on Michigan State's campus is expensive, as is car insurance and upkeep for a second car. Biking also means that I don't have to deal with many of the annoyances of rush-hour traffic or finding parking on campus. And it's a great means for me to get exercise.
As much as those are all good reasons, what I like most about biking here is how it allows me to get to know my neighbours and people around me. Because I bike by often enough, I know the house down the street with numerous cats: one is almost always sitting on the porch (I've also bumped into a raccoon near there). I can tell you when the water level has risen so high that it crosses the River Trail near Kalamazoo Street. I've greeted numerous people on their porches or walking or biking (many people will smile or say hi). I've even bumped into some of Campus Edge's grad students along my route and enjoyed a short conversation to catch up on how things are. I expect yelling hello to a neighbour's husband as I biked by after dark while he was putting out his garbage was less appreciated, but that, too, creates memories and appreciation of my neighbourhood.