This is a big deal for me, as I have only been without a car for more than a week once in my life since I was 15 -- and that was due to an unpleasant car death when I was living with my parents and my marriage was falling apart and I was freelancing in the RPG industry for a living and supporting my husband as he went back to school. It was not terribly fun. This time, I'm the one who brought it up, so no worries there. It would put me on campus more, but I have an office and a library carrell, so I have places to work on my dissertation without dealing with doggies. It would probably be a good thing to get me on campus more for my work, even if it makes me a bit twitchy at not driving as much. Then again... driving isn't a thing that is the end all-be all of existence. And it'd be better for us financially and better for the environment (and easier on our poor old driveway). But I'm struggling with it a little, even though I like a lot of the perks of it.
If you've deliberately downsized your driving options, I'd welcome your input in how it's affected you. More data points are always a good thing.