Possible Monogamy Gene Found In People
Calopteryx sends in a New Scientist summary of research from Sweden pointing toward the existence of a gene that influences monogamy in men. (The article doesn't mention women, and the study subjects were all men at least 5 years into a heterosexual relationship.) "There has been speculation about the role of the hormone vasopressin in humans ever since we discovered that variations in where receptors for the hormone are expressed makes prairie voles strictly monogamous but meadow voles promiscuous; vasopressin is related to the 'cuddle chemical' oxytocin. Now it seems variations in a section of the gene coding for a vasopressin receptor in people help to determine whether men are serial commitment-phobes or devoted husbands."
Because which strategy works better would depend on what strategy everyone else in the local population is following. You end up with an stable equilibrium proportion where both strategies work equally well, all things being equal, but if you perturb it slightly the one becomes slightly more advantageous than the other and reproduces faster until the equilibrium is restored.
Congrats on the impossible to prove otherwise post!
There is no way to prove that your genes are not influencing you.
However since identical twins separated at birth have many mental similarities, I'm going to go with gene's influence you more than you know.
http://www.washingtonpost.com/wp-srv/national/longterm/twins/twins2.htm
"Only one thing, is impossible for god: to find any sense in any copyright law on the planet." Mark Twain