I think I'm justified in being mad at my parents for not helping me out
Why exactly are you mad at your parents for not helping you?
I wish they would throw me a bone about their wills
Your parents are providing you with help by including you in their wills, so you should be grateful by default. Talking about their wills is a separate issue and you shouldn't allow that to interfere with everything else.
I don't care anymore. Fuck them.
I know you're angry, but I don't think it's okay to curse at your parents like that. If you aren't happy with their will, then perhaps you should sit down with them and have a conversation about it.