Then you clearly haven’t heard of extreme sports. Mountain bike? Base jumping? Superman died in a wheelchair for mere horse riding. Also see: personal responsibility & nanny government. The entire point of capitalism is that your pursue *your* happiness, not wither other people find it disgusting. Those that make this work for them, are “rich” (be it in money, pleasure or life experience), those that don’t, fail. (be it ending up poor, or dead). It’s that simple.
The question about homosexuality and marriage has absolutely nothing to do with whether someone can do it or not even though it is clearly very bad for them. Catching a disease is not an extreme sport. Forcing acceptance of a behavior that is logically and religiously incorrect on other people and abridging their freedom not to associate with it or accept it is not about capitalism. Capitalism and freedom does not flow one way and does not in our Representative Democracy flow with disregard to the validity of the claims and the will of the people.
We are not a representative anarchy. People have a protected right to make political decisions be they right, wrong, or indifferent. They could ban Mountain biking just as they have tried to ban guns. No one is trying to ban homosexuality though it once was and the laws were found at the time to be well within the confines of the first Amendment.