From a neutral standpoint, you say religion poisons everything (the things you want to do but "cant"). However, whats to say that those religious ways of life aren't all perfect. Although obviously we can agree some things are normal, (some) atheists say that morals are stupid, and that people should do whatever they want, other than killing, etc. I know someone who believes prostitution is acceptable. However, (from a neutral standpoint) there is no overlying figure saying that this is exactly the way things should be. Its an endless conflict. Although personally i am a Christian, nothing, other than my faith in God, says that what the Bible and His word says is correct. People who chose not to believe this cant say "well the Christian God says that prostitution is wrong, so i can't do it." they have different beliefs and are entitled to them. In your opinion, religions spoils what you think is okay. In theists and religious persons' opinions, you are ruining what their God or Deity wants you to do.
Also i used prostitution for this just because its the first thing that came to my mind. There are obviously other things that are disputed.