I beat up my step dad. Was I wrong in doing so? (Long read)

[forest-spirit]

Well, judging from your story you weren't right, that's for sure. Sounds like he at least tried to do something about your relationship but you on the other hand didn't lift a finger to make the situation better. If you really respect your mother you need to drop the "I'm entitled to everything and shouldn't need to do anything in return" attitude and start helping out at home.