I may have really hurt my parents' feelings
Can you explain why you would want to hurt your parents' feelings?
While I was growing up, my parents had no time for me and I was kind of a toy for them. I just told them off and said I didn't want to see them again.
I understand that you feel hurt by your parents inattention, but cutting them out of your life altogether may not be the best solution. Why not talk to them to see if you can resolve the issues between you guys?
I don't care. The whole family will collapse without me.
Have you ever considered going to therapy to work out these feelings? If you don't want to talk to your parents about it, a therapist may be able to help.