why I, being child free, should not have fun with all the things that are generally considered wrong
As long as you don't infringe on anybody's rights or break any laws, why shouldn't you?
Is this a question you truly ask yourself or a block you really have? And if so, what do you think is the main cause?
The things you mentioned aren't considered wrong to do even if you're not child free. I have two kids and still watch obscene movies, have sex with my wife and drink alcohol when I want to. I'm just more careful about how much I do of those things because now I have other people depending on me. When I was CF I also did those things but I only had myself to worry about...
Those sound like normal things. At least where I live it’s considered weird not to drink alcohol and not having sex.
What do you consider obscene movies?