"Reverse sexual imprinting is also seen in instances where two people who live in close domestic proximity during the first few years in the life of either one become desensitized to later close sexual attraction"
That sounds biological to me... not social.
Children are highly sensitive towards all sorts of influences, such as even thoughts and the energy that's being released. Since most of our communication is non-verbal, yet children rely on adopting behavior which guarantees receiving love in order to survive, of course they will behave in a way that insures that this need for love is being met. Children, who represent a younger version of adults, depend on it.
In other words, those two things, the biological need for love in order to survive, as well as the learned behavior in order to meet that need on a specific social group's terms (where youngsters are being brought up) can't be separated. It's a symbiosis of physical and psychological needs complimenting each other. I find it interesting to discuss whether or not this makes sense, simply because everyone has developed their own belief system of what's true and what's not. Although it's far more challenging to find out what we will do with it....
And it's not my theory, it's a bunch of people with PhDs and such. But I can report from my personal experience that I know what they are talking about. Not being mentally satisfied after sex / an orgasm indicates that the sex was "unfulfilling" from a biological point...
I'm aware that this theory doesn't spring forth from you, but you adopted it in ways that makes sense to you.
Being mentally unsatisfied suggests that either your partner doesn't challenge you on an intellectual level (happens regularly with great thinkers) and/or doesn't give you what you need on an emotional level.
There's another link to this as well. It could be possible that within your model of the world, the way you see things, you came to belief that there is no real complete satisfaction in regards of emotions and intellectual/mental stimulus combined with sex with your partner.
And then who could ever satisfy your hunger for that? Who could give you what you crave? With this set of beliefs no one ever can! (If I'm correct, that is) And so it's working that hand until you drop or finally feel something rather then solely physical release. Masturbation gives you a very close intimate connection with yourself, perhaps the kind of connection you'd like to feel with a female.
Take Viagra and erection problems. Do you really think it is PHYSICAL? We can't get it up because our body is desensitizes (or repelled) by our LTR partner... it's all mental / biological but not in a "blood flow problem" way, rather in a "we need sexual variety" way.
Your statements are controversial. But that's alright, I forgive you - this time...

However, if you can't get it up, it's because of what you came to belief. That nothing ever lasts, that your finger is stuck in your nose, that she's not on the same mental or intellectual level.....all of that has it's influence. Now if you want sex every other hour and feel this totally fulfilled - I don't think that's even achievable, unless you find at least ......let me see....I'm lousy with numbers......around 8-9 occasions for sex a day PLUS feel this kind of satisfaction. If my idea is true, then you'd set yourself up for failure. Again - it's your belief system, unless you're a male nymphomaniac (God help us all

) and then....I'm sorry......I just interrupted my own pattern....hehe.
Oh, yes, then there shouldn't be any erection/Viagra issues at all....
Sad sad sad.... I used to be such a romantic fool. I still hope I'm wrong.
What exactly is sad and what is it that you're hoping to be wrong with? I can only guess. *smirk*