I think you will find yourself in a happier place if you focus on ways to make yourself happy instead of causing pain in others.

Petty stuff like breaking your brothers headset and heavy stuff like wishing the pain of losing a loved on on your stepfather only looks bad on you and guess what? Neither one is going to make you feel better about yourself in the long run.

They are assholes right? Fuck them but you ‘win’ by being the better person not by letting the hatred consume you.

Find a hobby or an outlet, work your ass off, become successful and you will have the ability to do whatever you want in life. The best way to spite them is to build yourself up not waste your time and effort tearing them down.