To be honest... I don't like any "shipping" of any kind.

I love romance and sex in writing. I write lots of fanfic that revolves around it. But I think of "shipping" as something different. And I think you've pinpointed at least part of where I see the difference. It's this idea that the person or persons who are boinking are doing so as some kind of reward, or because one or both of them is perfect. It doesn't only come up in fanfic, just more in fanfic than other things I read, and I hate it with the burning of 10,000 suns.