I do sincerely believe that evolution made us have sex by making it, and the process leading to it fun. I do believe that humans have intentionally attempted to reduce the risks of having sex. We have in particular invented several kinds of contraceptives, condoms, spermicides, and vaccination with the conscious, deliberate intent of making sex less dangerous. I do believe that, so to say, evolution succeded, and sex is a lot of fun. For everyone. All research in positive psychology indicates that intercourse either tops, or rivals only conversation with friends in amount of experiential happiness. (Gilbert2007, Layard 2004, Lyubuomirsky 2008, Seligman201x). I have no reason, and I mean, no reason which I have ever seen, anywhere, or ever heard, from anyone, reliable or not, to think that we are not under-calibrated for how much fun sex is now, given its reduced level of danger. I would be sad, it is true, if new information came up saying so, and would require lots of evidence. But as far as my mind can reach, I do, sincerely and wholeheartedly believe that the vast majority of humans, regardless of age and gender, would lead better and more pleasureful lives if they had sex more often, with less guilt, with less fear.

In what sense is sex under-calibrated? From the point of view of evolution enjoying condomed sex at all is a flaw. If you're reply to this is something along the lines of "screw the blind idiot god, I enjoy sex and I'm not care that it's not adaptive" you are left with the question of why you identify with the preference for sex but not with all the associated guilt, value of chastity, etc.? If your reply is that you get more pleasure this way, why not cut out the middleman and go directly to wire heading?