To extend FF comment - he hits the nail on the head.
When people are open with their passion, their path/direction and what they do, people tend to respect them. However there is a time and place to be open about their passion (Heath comment above)
Do you think Arnold will be remembered for being a "roid head"? No… he will be remembered for being the greatest bodybuilder to ever walk the earth and that he started a revolution that shows no signs of stopping.
The man will be placed amongst the legends of Lance Armstrong, Carl Lewis, Mike Tyson, Alex Rodriguez and ermmm .... Linford Christie - All men, by the way, that were sports leading professionals who all took performance enhancing drugs aka Steroids in some shape or form.
*should they be using while in a competitive environment is another topic of discussion, but that's not the point I am putting across.
They made the choice, they're careful (albeit honest)