With proper treatment and medication can someone still live a full life even if their hiv has progressed into aids by the time of diagnosis?

Absolutely: Thousands of people in the US alone are living proof, John. Why do you ask? I think perhaps it's time to be brave, sit down with a decent and humane physician, and accept his/her friendship and caring, even if it's perhaps been hard for you to accept warmth in the past. Whatever happens, you'll be nurtured through this experience and come out a happier and more fulfilled man.