Having a lot of random, casual sex makes you detached. Hell, it doesn't even have to be "a lot" for you to get like that. It happens way before you get to "a lot". There is just no way to make the intimacy casual without becoming insensitive. It's too invasive, to touching, too intense to do without some kind of emotional attachment, unless you seal those places off. That is, assuming you ever had those places. It makes you unable to feel deeply without a lot of work on the other person's part. It also means that sex will never ever be really fulfilling. It will be good, don't get me wrong, or even fantastic, but it will always be more physical than anything else. It is very easy to get jaded. Easier than anything, I think. Most people are jaded, nothing is precious, nothing is happy, nothing holds any sort of good pleasure. It's all selfish, all very dog-like, all base.

The problem with being jaded is that unless you are very introspective (and very few jaded people are, it's too ugly in there) you never know it. It's just like being racist. Racists think that they are reasonable and honest. Jades don't know that they feel things less, they get colder with each partner that they will never love, that they are killing their ability to love every single time they touch and get touched by a stranger.