GSP admitted that one of the main reasons he decided to vacate his UFC welterweight title was because of the weak UFC drug testing policy. GSP noted that weak UFC drug testing policy was something he wanted to change but he says that someone doesn't want things to change for fear of losing money and that the UFC drug testing policy will stay the same.

"It bothered me enormously," Georges St-Pierre said in an interview.

"That's one of the reasons why I stopped fighting. Not really to teach them a lesson, because that would also punish me. I wanted to do something for the sport. I love the sport. I see the direction it's going, and I don't think it makes any sense. This is stupid."

According to a report on BJPenn.com, When a reporter asked the former UFC welterweight champ about the drug testing issues he was presented with prior to UFC 167, GSP had this to say.

"I tried to do something to change the sport. Unfortunately, there were other people, for different reasons, maybe for money, in fear of losing money, because if you canceled the fight because someone tested positive there are millions of dollars (lost). Also, the sport's image ... If you start testing everyone, how many will get caught? I don't want to say in public because I don't want to accuse anyone, but the sport's image will be hurt."

"Don't forget, I have internal information. I'm an athlete. I know what goes on, so that disappointed me greatly."

"The only thing I want to say is, I wanted to do something to help those who are honest in the sport. Believe me or not, I never took drugs in my life. I'll take a lie detector test, I don't care. I'm for anti-doping tests. I think it's a big problem in the sport.

"This is a relatively new sport. There's one organization that has a monopoly, so the fighters don't have much power. They can't really talk because if one says what he thinks, he will get punished.

"If we want the sport to be accepted worldwide, like baseball, hockey, football, soccer, I believe [drug testing] is the thing to do. I think it's just a matter of time before it happens, it's just that I tried to make it happen now. Maybe they didn't like the idea because if I did it now, it would lead to others doing it and maybe that's not something they wanted to happen.

"It disappointed me. You know that there are things I can't say. I'm holding back. I'm a public person."

"No wants to talk about (drugs in MMA), but I think we need to talk about it. It's a problem.

"I wanted to remain diplomatic, but unfortunately there were people who weren't ready to change things. I'm certain it's a question of time. And maybe if things change one day, I'll return."

It seems that GSP wants to return to competition, but he will remain retired from MMA if the weak UFC drug testing policy remains the same.