Hey, I am a normie. And college was full of drama and stuff - more so, I think, than the job I now have.
OTOH, I would say drama and stuff easily improve people as well as classes do - many (most?) of us had been sheltered kids before that. My own specialty (botany of vascular plants) just happened to include classes, drama (angry landlords, poachers, etc.), and stuff (expeditions) - a very natural combination...
LW has a problem. Openly or covertly, many posts here promote the idea that a rational person ought to be able to self-improve on their own. Some of it comes from Eliezer's refusal to attend college (and Luke dropping out of his bachelors, etc). Some of it comes from our concept of rationality, that all agents can be approximated as perfect utility maximizers with a bunch of nonessential bugs. Some of it is due to our psychological makeup and introversion. Some of it comes from trying to tackle hard problems that aren't well understood anywhere else. And some of it is just the plain old meme of heroism and forging your own way.