Why is my life nothing but suffering?

I was born to a poor family so I never had much money and have had to live with very little. to top it off because I was poor I was a very bony kid and still am. I have just had bullies my whole life at school and my life is a disaster. I started having psychological problems around 16 years old and I recluse from the world at that age. Ive been in a reclusive state and am reluctant to talk to any people or even try because i feel to uncomfortable or out of place when I try to do it. I'm on disability now and never leave my house. my mom gets the groceries and if she didn't then It would just be suffering for me to go outside because I hate going outside.