I don't understand why some people on this thread keep saying 'lots of people do this!' Or 'women do this too!' as if it's a great piece of evidence to prove these kind of sexual practices are ok.
As other people have repeatedly said. We KNOW lots of people do this. We KNOW some women are into it. We KNOW that because of the internet and consumer culture pushing anything that sells (costumes, films, books etc) that it looks like normal, light hearted fun. But just because lots of people do it really does not make it ok.
It's not ok and it's also not a type of therapeutic practice. If you have a trauma or a lot of stress in your life of course you need some kind of relief. Alcohol, drugs, taboo sex. All these things will definitely make you feel good in the short term. Of course they will. But there will always be a niggling feeling in the back of your mind that you are really not healing yourself. Things like this tend to become addictive and long term make you feel ashamed because you know they're not right.
Integrity. Everybody owes it to themselves to do things they know will not harm themselves emotionally or psychologically. Anybody with intelligence and a conscience knows that acting out father/child sex is wrong whether it's in public or the privacy of your bedroom. You can't hide from yourself.
It's wrong but ultimately not because of morality, religion or social control. It's wrong because it goes against your own peace of mind.
You really are in charge of your thoughts. You've had a traumatic childhood? Your life is stressful and shit? With 100 percent certainty you won't make peace with yourself long term by acting out child abuse, violence, drinking or taking drugs. Notice your thoughts, reflect on them and then make better choices.
Sex is amazing. Connection between two people as themselves (not pretending to be children, subs, doms etc) Imagine that! Sex with someone who really really fancies you (maybe loves you) for exactly who you are. A lovable maybe middle aged woman not pretending somebody she's not. Fantastic! Better than anything else. Try it.