for women, pleasure more or less can be shut down entirely if they aren't in the mood, but for a guy, so long as it's not so revolting to overwhelm senses, a warm lubed hole is a warm lubed hole weather its on a guy or a woman, as in all that a guy needs for pleasure is touch, no mood needs to be set at all, no romantic feelings or attraction need to be there. I have known enough gay people to tell you they have little problem having sex with a woman, the only real difference is it doesnt 'turn them on' and they never really pursue it. now women may not fully understand this, what with their sex drive being almost fully dictated by mood, also look up laws on this topic being written from a woman's perspective in male rape + child support cases (the he ejaculated so he was turned on there for no rape/'unwanted advances' so he is on the hook for child support) areas.
Now that up there is more or less just to point out it is his duty to have heirs, or at least normally that's what his duty is. So regardless of what's in front of him he would be able to fulfill said duty, no real idea if he like it or not, we just know he goes at it for a long time.
sorry for the bit of a tangent there, but the understanding of how male organs works seems to be misunderstood by so many people who are male and female given laws, I think it needed to be gone into to some extent.