I've been training in gyms for over 20 years now, and yes i've dabbled in 'stuff' (only once though).
But as has been said, you don't take gear and just 'get big' you have to work your ass off to maintain quality size and shape.
That said, as most of the old schools guys will know/remember back a few years ago, a lot of the top comps were decided by the demographical craze at the time, ie. Dorian Yates won everything going because the craze was to be a mass monster, then followed by Coleman.
Previously to that people like Haney, Zane, Arnie all won, they weren't enormous 'freaks' by todays standards, they were very aesthetic and that's where my preference would be.
When better drugs AND supplements came along we realised the potential to be bigger, and now i just think that they look for the freakiest monster in the mens category, and sadly only gear will bring that.
To an extent this was the same with the women, one year they'd be looking at the more fitness type figure for the Ms O (Corey Everson in her athletic prme?), the next it would be muscle mass and veins.
If drugs didn't help people to get so big the demographic would settle for smaller and natural, because they can still look fantastic.
Google Ronnie Coleman. Now be careful as there are 2 of them, one is natural, the other...well....aint! Both look big, but only one looks truly aesthetic imo.
It is all subjective of course, and my preference is always towards the lean fitness type.
But i always like Kevin Levrone's physique. Dorien Yates? Nah, crazy huge. When you can't wipe your own backside without front-wiping, then you are too big..
As always, its horses for courses, but i'll echo plenty of other posts in here, it takes more dedication to be at the top of your game than just about any other sport i know, except maybe gymnastics and they look awesome too.
EDIT: Anyone remember WBF Bodystars? Vince McMahons attempt at a drug-free bodybuilding federation. It flopped, and partly due to the athletes being put on alterior diets that would try and match the results that drugs gave. Some of the guys physiques were laughably pathetic on stage....shame though.