your brother should never have said your father can have a heart attack because of you. it was way out of place and he shouldn't shout.
my worst regret is not going to college when i had a chance. you're still young. go now. i was afraid to go out among people too, but went to work and learned to get over it, and now i'm not so afraid anymore.
there are many jobs for us aspies out there. computers, medical research, etc... maybe there's a place you can get a test to show you what are your talents and what path you should take. but go now, because if you go to college too late no one will hire you when you get out. you can still do it. try it at least. in computer, for instance, they hire you based on your abilities and brilliant mind, and we aspies do have those, and not on your social skills. many aspies go that path. you'll make tons of money and you won't regret it.
sooner or later, you'll have to get a job and you said you want to spread your wings and make a better life. if you work in an unskilled labor kind of job you'll work your head off for peanuts in a boring, annoying, mind numbing...
help some around the house and go to college. my niece is in college now and she only goes four days a week anyway, and they have breaks and vacations. there's nothing to it. and who knows, you might just find your obsession in computers/chemistry/biology, whatever.
i know it takes courage for a aspie to face the outside world. i've been there. be brave and do it for england. i keep my fingers crossed...