I think the difference is that people who DO want such interactions don't really feel it as an invasion, but more of something to share with someone. Not to say you are bad or wrong for feeling otherwise, but that seems to be why you are so against it.

I guess the question becomes is there a way for you to work on not thinking about it in that light. I don't have any answers, but if you want to find a different mindset, you should try to.

I also agree that sex isn't love. But at the same time, sex means different things for different people. Some people like it for the same reason they enjoy reading a book, its enjoyable. For me, it was always about the bond with a person. While sex isn't love, I couldn't imagine having it with anyone I didn't love. Love is a prerequisite for sex, but doesn't necessarily mean its a necessity.