@Leadfoot,
It depends on the situation, Leadfoot. There is a thrill to having sex with someone new even if you know it will never last. There is also a different pleasure to having sex with someone with whom you have had a deep long term meaningful relationship. I found both of these situations to be very pleasurable. I have even at times found "having sex with my fist" to be pleasurable.
The question of which is more pleasurable is based on the context. There have been times in my life where I didn't want an romantic entanglement and found that casual sex was the most pleasurable.
But again, it depends on the context, the stage of life you are in and other circumstances.
Human beings express their sexuality in many different ways. I don't see why you say that any expression of human sexuality is "fucked up".