It doesn't shock that a man who is obsessed with being the best didn't use performance enhancement materiel when significant numbers of competitors were using it. But was he using it in 2007, perhaps his most dominant year? Almost certainly not. He was wasn't using in 2005 either.
Bonds would have been a Hall of Famer without steroids. Arod certainly is. That he used is perhaps a sin but it didn't make the difference between HOF and a good, everyday player.