This publication documented several functional assays, such as human fibroblast proliferation, to try to make the case that the cocktail of snail biochemicals acted as a growth factor for skin. And yes, behold, a very weak effect on human fibroblast survival and proliferation. What the researchers failed to mention is that you can add just about anything to a culture of fibroblasts and see the same thing. Proliferation in dermal fibroblasts is something of a stress response in itself. As I like to say, you can simply spit into your fibroblast culture and make them pump out more ECM materials. Of course, when you look at the cytokine content of human spit/snot, not to mention the defensins (host defense peptides) etc., you can see that it (just like gastric slime) has remarkable stress resisting or defensive properties itself.
Finally, the life of a steroid-user is not as glamorous as it seems. Steroids are expensive and illegal. They can do jail time if caught, and there are a lot of ancillary drugs and supplements that must also be taken to minimize the damage to their organs or to keep certain hormones in normal ranges (ex: Nolvadex). Their bloodwork (hematocrit, cholesterol profile, etc.) and blood pressure is often atrocious. They battle with sleep apnea and fluctuating moods and sex-drives, and many have trouble performing simple daily task such as wiping their butts or washing their backs. Last, their caloric intake is much higher (and expensive), and it becomes a chore to meet calorie and protein requirements day in and day out. The grass is not always greener on the other side.