Well I'm 28 and just did my first cycle in February. It was a halodrol-50 clone called H-Drol. The stuff was pretty mild, I got absolutely no side effects (aside from increased libido) and I kept about 90% of my gains. I also went from 185 to 176 and gained size and strength.
I don't recommend them for anyone under, say, 25...but for me, it made working out exciting again. It got to the point where I was just going through the motions just to maintain my current shape.
It's a personal choice...but I'd just hate for someone to order these pills online (they're cheap and easy to get) and not know what they're doing. Cuz you can mess up your liver pretty bad if you don't take it easy.
Just my two cents.