my brother hates me and humiliates me- Is this normal?

Dude, I dunno why you're on social security so I won't judge in that respect, but take a damn shower. No one wants to be around someone that is greasy and unwashed and smelly. Start taking a shower first thing in the morning and always wear clean clothes. You'll feel much better about yourself. Brush your teeth two or three times a day and wash your face at night and you'll feel like a million bucks. Keep your room neat and help around the house a bit. Clutter and mess can be very irritating and depressing.