Well, at least you admit it: "Having sex with my wife is not a matter of showing my love for her; it's me acting on my sexual drive." 

Wow! I think she can get an annulment for that.   

Again, at least you're honest to admit it to us. When did you tell your wife what primarily--and primally--"drives" your lovemaking? 

And how 'bout your kids? "You're here because of Daddy's primal  urge to act on his sexual drive with Mommy"! 

And I'm curious, where does your wife's sexual drive and desires fit in? Or are you promulgating the long-disproved lecture of Fr. O'Brien to the sophomore boys: "Men and women have different urges. Men want sex more than women do."