Why Cheat?

Steroids. A constant controversy in pretty much every sport. You hardly ever hear of someone being caught taking steroids and coming back after punishment to still play well. Rodney Harrison of the New England Patriots, a pro-bowl safety part of two super bowl teams. Suspended from the NFL for 4 games, and you havn't heard a word about him since. Why? Because he has not played as well as he has in the past. Rafael Palmeiro of the Texas Rangers. Accused of steroids, fearing testing, he retires. Probably because he was afraid of playing without his beloved juice. However, there are sometimes oddities that recover well from failing steroid tests. Jason Giambi of the New York Yankees was accused of taking steroids during the 2004 season. He admitted using them right away, served his punishment, and still came back to be a decent hitter, ending the season with 12 home runs and two back to back 30 plus home run seasons in the following years. Shawn Merriman of the San Diego Chargers was suspended from the NFL last season, yet still led the entire league with 17 sacks and earned a pro-bowl selection. Apparently these athletes can work hard on their own and still play well, so I ask why cheat?