To me banging some body parts together doesn't require talent or emotion. It's not sexy or life changing. It doesn't offer anything at all any more to me.... I would rather have a good nights sleep than fuck someone I have no emotions for. At least that doesn't cause me to have any unwanted emotions.
I don't get why anyone would want to force themselves to suppress emotions or even find sex without emotion appealing. I used to. It was exciting and made me feel special and exciting to others. I loved the attention and the fact that I was desired, but it was all falsely presented and a lie. I feel lied to that there was no emotion. The trust is gone because of that.
I have been reading about the effect the porn industry is having on sexuality these days... on third wave feminists and where slut culture has come into play.... seems suppressing emotion is alive and well.