Am I (17m) wrong for wanting to cut contact with my brother (20m) ?

My brother (20m) has always had something out for me- when I was 3 he was the reason my left hand became disabled (by putting my hand under a running treadmill) from than on he has always done something, non provoked, to get me into trouble; From blaming me when 100$ worth of movies on a drive was erased; to blaming me when a random pipe burst and flooded my toilet and room (While I was sleeping), and last but not least assaulting me during our childhood- from sitting on my head to punching me in the neck, which at some point lead to me running away to my granny’s house (2km) when I was 12. As he still lives with my family, he has a tendency to loose control as he always slurs at me, tries to assault me, (hardly any damage tho since I began going to the gym a year ago and he’s still the fat person he used to shame when he was younger)- So my final question is, would I be in the wrong for cutting contact with him forever after he goes to community college?