I think the structure of school in general is pretty bad for mental health. I finished my CS BS degree earlier this year, and the quality of life improvement from not being in school anymore has been huge. Instead of constantly worrying about homework, not being able to predict my schedule (due to different homework assignments taking different amounts of time, etc.), and sacrificing sleep on a regular basis, I go to work for 8 hours and then then don't have to worry about it for the rest of the day. It's not a job I want to have forever, or one that I find particularly interesting, but it's still way better than being in school. I stopped taking antidepressants after relying on them to live for about six years, and I'm doing fine.

School sucks. I don't know what the solution to that is. Maybe there isn't one. But I didn't truly realize just how bad it was until I was done with it. I can only assume it's worse when you're in a graduate program, particularly in a field like philosophy where your post-graduation prospects are so low.