I'm a postdoc, which means I'm not technically a student, but I am essentially a glorified grad student who didn't get enough punishment the first time around. I commute to campus about 8 mi RT year round in all weather. My option is to take the MBTA, which was actually my impetus to start riding as it is horribly slow, expensive, and unreliable. I'm lucky enough that I can stash my bike in the lab and nobody complains. Otherwise, it would go in a locked bike room on campus. One of my labmates locks her bike up outside and has never had a problem (but theft and vandalism are big problems).

My favorite part is not having to take the bloody T. Plus it is nice to be faster than just about any other form of transportation during rush hour along with the exercise and saving tons of money.