Hey man, you seem like an good person, sorry you’re in this situation. Fuck those people who view a stutter as justification for shit, they’re just idiots who don’t deserve your attention. I’m sure one day your siblings will understand, for now just hang in there and try to keep a positive attitude, even if you feel like shit, I know how hard it can be. I’m 100% sure that you’ll be successful eventually, your thoughts and perspective of things such as vices and letting others form their own opinion makes it clear to me that you’re intelligent and can do great.