Yeah, I saw that after I'd posted, so apologies for my presumption
Was it really such an unedifying experience, though, that you can see
nothing of benefit arising from it? I mean, a 2:1 is a good degree (and if people think you're "stuck up", it's either because you are, or because they're jealous - which one do YOU think it is?

).
Because I'm a mature student, with a Life Of My Own, and also because I live 250 miles away from my uni and only have to go in one day a week for lectures and stuff, I don't really participate in the student lifestyle, either, but I've sampled it other times as a non-student. Yeah, a lot of it is overrated, or seems great at the time, but I can see how it can pall, but you sound REALLY down on it! I've heard stuff about crap lecturers, too: listening to my dad talk about his BSc, then his Master's, some of it is unbelievable: lecturers who mumbled, or who were deaf, or just plain appalling teachers, and with a very "I'm too good to speak to students" attitude (this was the 1960s), but somehow people got degrees and made some kind of career out of it.
I'm fortunate - well, that or undiscriminating - in that my lecturers have nearly all seemed approachable, knowledgeable, and competent. I've had a minor run-in with one of them, who wasn't really one of my tutors anyway, just a co-facilitator in a group, but some of my colleagues do seem to have difficulty with rather more of them. Ultimately, though, the impression I come away with is that the university thing is much more of a personal journey, and, provided you don't end up completely at odds with the staff, the finer details regarding their ability are not all that significant. After all, if you got a 2:1, that sounds like the situation for you, too - nobody gets a 2:1
entirely by accident.
To be blunt about it, it sounds like there's rather more to your university experience than we're seeing here: perhaps your attitude to it (or life in general) isn't all it could be?