I'm just trying to say that you don't know the exact reasons. It's hard on you, sure.. but it could be hard on them too. Maybe they said it out of pure anger, maybe they didn't actually mean it. Honestly, you really do have to look at both sides of the situation. That's all I'm saying. You don't have to take my advice, but until you look at both sides, your argument against them is still up in the air.
Doubting my credibility? I was a heavy drug user, drank, severe depression, SH
for 6 years, attempted twice, bad student, among many other shitty things. But you know what? I realized how much I was making my parents suffer. It was a reciprocated hurt for the both of us. If it's such a big deal to you, turn your life around. Dying isn't the answer. Living is. Sure, everything isn't great right now, but I have enough sense to look at both sides of things and realize that I can overcome these feelings and make myself a better person. The best way to "get back at your parents" is to do very well, show them that you are the better person, show them that you can do better than them.