Ness, I don't know if you'll ever read this, but the whole thing about school is that yes, you will never use most of the stuff you learn. What is important is not what you learn, but the processes you utilize to learn these damn unimportant things to do well on tests that don't make sense. It's all about dicipline. The harder you try in school and the better grades you get, the better the chances are for you in the future to get a good paying job so you don't have to work so hard.
And don't kill yourself. That would just piss us all off. It's not like I totally know you, but I know you enough that you'd be missed. 😠