Did you expect your comment about dogs to shock me?
       "If they can do sex whenever, why can't we?

Isn't that how God made them?"

First, dogs don't do sex "whenever." Sex in the animal world is for procreation, not recreation. It's for making puppies, not love, and the fact that it feels good for them is a bonus.

For humans, sex is also about making babies, but it is also about the choice to express love and commitment in a nonverbal way.