Thank God for HIV

So, I was talking with a guy this morning who is HIV positive. He told me about a guy he met who was also HIV positive. The guy in the story was speaking at an HIV support group. This guy got up and said, "I thank God for HIV." The guy I was talking with heard him say this and was immediately confused. What is there to be thankful for if you have HIV? It is a terrible disease that destroys your body and slowly sucks the life out of you until only a shell remains, and then you die. And why would you thank God for it. Shouldn't you be angry at God, if anything. Well, then this guy who was speaking at the support group said, "if I hadn't been diagnosed with HIV, I would still be an addict out on the street. I wouldn't care about my health, and I wouldn't be here today. I thank God for HIV."