This hedonic attentuation can take a long time, because the Coolidge Effect ensures that sexual variety is intoxicating to men. Most of us, if we're honest with ourselves, would like to bang far more women over a lifetime than we're capable of within the constraints of reality.

But, as with caffeine or any other stimulus really, eventually desensitization kicks in. The result is you need more of that stimulus to get the same kick, and sometimes a lot more.

I used to love the chase even when I was going after 6's (5's to me are average women); I'd sacrifice some hotness for the buzz of a same night lay. But not any more. A 6 does nothing for me. 7s are still fun, but I'm far more refined in my choices now. She has to be interesting, attractive, and my type.

I used to get a rush off giving a good presentation in work/university, but after doing countless hours of them I don't feel it as much. I used to feel a twinge of excited anticipation, even pleasant nervousness, when I'd meet a girl for a date (drinks at a bar). Now my pulse barely fluctuates - unless I am very, very much into the chick. I used to get very excited when a chick would let me fuck her in the ass; now it's just something that happens, just another sexual thing. For sex starved betas, or men shackled in boring relationships, this might manifest as watching increasingly fucked up porn or developing increasingly weird sexual perversions, like pegging and dress up/role play or, at the extreme, very weird shit like autoerotic asphyxiation. It all grows from hedonic desensitization.

If you don't let it fuck you up, this is a fun part of life, because it keeps us driving forward. We create a blueprint in our heads of the things we want to achieve - get in shape, sleep with x,y,z girls, get this career, that car, this salary - and once we get it, it loses its magic over us and we want something else.

True fulfillment and pleasure and happiness comes from the process, more than the outcome. It's the journey and the anticipation that moves us, down to the strands of our DNA.