There seems to be a rule of diminishing returns that makes it so that the more content coming provided by one source the less return you get out of each interaction.
Diminishing returns can be compared to fast food. Imagine, if you can the juicy glory that is the 1st bite of a BigMac. Much has gone into the taste sensation delivered at this moment. So much so that any research regarding creating desire in humans might be considered quaint by the fast food industry pros. Now as a comparison imagine having eaten many burgers and being full, the law of diminishing returns says you wont value the last burger as much as the 1st. Not to complicated right? (see nothing about food politics or marketing to children or anything)
WAIT THIS IS CONFUSING EVEN TO ME DO NOT ATTEMPT TO FOLLOW THIS LOGIC GAP YOU WILL CERTAINLY FALL INTO A DEEP WELL OF BRAIN PAIN.
Thus we should all strive to be our own porn star as needed when we are feeling up for it. But to try and create more than this... is this just a cheapening of sexuality? Here lies another conundrum for many of those would would sell sex.
The answer is, sell less and make it worth more. We hope.
And what can the Onion tell us about sex? In a word: "cry" In two words: "cry fuckers"