Even though you are old, women see you are jacked and assume you were some kind of stud in their youth. In their minds, the reason you continue to bodybuild at your age is because you developed a positive association for it back in your youth, because it presumably resulted in you succeeding in getting women.
This is probably why that girl complemented you. Western women are never nice to men unless they consider having sex with them (doesn't mean they will have sex with you, just that they consider it, the way one might consider buying a house but not necessarily go through with it).
As far as steroids go, perhaps there is some loophole that would allow you to get what you want. For example, certain mushrooms are illegal to possess, but the spores are not, since the spores do not contain banned chemicals even though the grown mushrooms do.