I completely agree with wildstang's last point -- I've been in a number of discussions around a few gyms, and I'll always say I'm natural (b/c I
am a lifetime natural) and the other guy says he's natural, too - he hasn't used for a few years. I generally want to hit these guys over the head while repeating "THEN. YOU'RE. NOT. NATURAL!!!" And no, "keeping your gains" without A/AS is not the same as gaining it without A/AS.
That said, though, I really don't care if people use - I just want them to be honest about it. (We're not judging you, 'stang

)