I dont know what to do about my family?

hey im 16 and i have had an illness which has kept me off school for 2-3 years and my mum is great and helps me with everything and we have a great relationship but my dad and brother im frankly scared of............. my dad ive never had a good relationship with 9 he doesnt even know anything about me ie favourite colour, hobbies or anything) and we barely talk but when we do he tells me im talking crap or im being immature, i should mention as my illness keeps me home i spend alot of time alone and dont get to talk to anyone most of the day, and then other times hell swear or shout at me. im sure he has anger issues and he never spends any time with me as we have nothing in common hes a farmer, i dislike farming, hes into football im not he is the basic opposite of me and i dont know what to do cause i want a relationship with him but im thinking just give up. its also the same with my brother. healso has anger issues and swears at me ( they both push me about occasionally ) and my dad will gladly take his side in an argument as they farm together go to agricultural events together and actually have things to talk about which i dont. my brother calls me a waste of air, food and electricity making me feel bad wen part of my illness is occasional depression :(. if my mum isnt there in my family i dont exist. i spend time playing computer games as theres nothing to do which results in my brother and father calling me fat and lazy ( im not fat im in good shape) i dont know what to do should i try and have a relationship with them? or when im older basically leave the family and only keep in touch with my mum? cause ive just had enough of being treated like the runt of the family for not wanting a career in farming.......