In the end, the steroid controversy may be less about what we want for athletes or children than about what we fear for ourselves. The performance enhancement of society promises to get only more radical, especially as genetic engineering grows more advanced. When people of means can buy sharper brains and stronger bodies for themselves or better genetic profiles for their kids, juiced-up athletes will be the least of our ethical worries. If Giants slugger Barry Bonds deserves an asterisk next to his home-run records, maybe we will deserve asterisks next to our salaries, our sexual conquests and our kids' SAT scores.