If doing steroids is "cheating" because it's unnatural, then why isn't Tommy John surgery considered cheating? You're taking a ligament from another joint and having it implanted to replace a worn ligament. Tell me how many pitchers through the decades were washed up prematurely because the science wasn't yet available?
Some are against steroids because of the long-term health effects and the pressures on young kids to use them but what if science made it safe to use them. Would you still object? IMO, steroids and TJ surgery are both players taking advantage of science, just the same as gulping down an energy drink. As the science improves, today's steroid cheats may be hailed as pioneers in improving the modern athlete for better play.