That seems a strange reaction to me, surely it should be what are you doing for God? Seems it's all about what other people think about your parents and whether you are shaming your parents in their eyes or making them proud by being a JW drone.
I don't know what to tell you, it's painfull I know. A friend said to me its like you're the child that was thrown away in your family.
The thing is I didn't give birth to my daughter so that she could be a carbon copy of me and believe me she isn't! Children have to grow up and live their own lives.
You are not responsible for your parents' lack of self esteem. They should have built their sense of self based on their own achievements not relying on what you do with your life to impress their friends/the congregation. Too many parents make this mistake but it's their mistake and not yours. I know it's painful nevertheless, chin up.