I am just in my first year, so take this for what its worth:
I live 25 mins from campus @ 65 MPH. I absolutely hate it. I have centered my leave/go home times around rush hour traffic (leave for school at 630 AM, drive home at 400 PM unless test week, then 600 PM). Aside from the first week after a test, I drive to campus 7 days a week. So gas money definitely adds up. I live in a fairly large city (Kansas City).
I dont like the drive because when things move smoothly its one thing, but they rarely do. Wrecks slow the pace down, idiots slow the pace down and are generally frustrating. With the crazy amounts of snow we have had, it has made things terrible during the drive. If I could go back in time I would live within walking distance of campus, and Im certainly moving for second year. Just imagine leaving the hospital around rush hour after a frustrating day and dealing with traffic, vs. walking home and plopping down in a chair. That's my biggest thing.
That may just be me though. I tend to be a silent road rager.