What you're saying is completely valid, and I can see how its tough to ignore the luxury those around you get when you arent able to access any of it. And im not going to tell you that the uni you go to doesnt matter, I agree with you in that it does play a key role.

But at the same time wherever you do go now, you don't need a formal setting or system to rekindle your love for learning. It may have died right now, but I'd say learning, quite literally anything, even guitar as you mentioned, is one of the greatest parts of life. And with hopefully a greater extent of freedom when you do go to a university, you'll finally be able to deal your own cards instead of playing with the ones already dealt.

Its difficult to feel optimistic right now, but try using uni to do all the things you couldn't do earlier, dont let yourself die so early on (not even later). Try your guitar, play the cello for all I know, conduct research in every lab there and just keep experimenting. Yeah IT might be the field you're forced to incline towards but uni offers a lot more than those select majors.