No kidding..duh is right. Supposedly there's a Parkinson medication that boosts dopamine levels, and some people take it just to have rocking s*x. They claim it makes them off the chart h*rny.
Dopamine also greatly increases the psychological effect of "salience". Things seem to have greater importance or meaning so I believe that it is highly possible that people with differing dopamine levels find sex more or less of a meaningful or transcendent experience. I fairly frequently "trip out" during sex. It's kind of disturbing to think that maybe I could be having such a deep experience and my partner might just be "getting off". Fortunately, lately I've been hanging out with a man who says things like "How could your X have chosen to leave such a sensual woman?". Perhaps it was dopamine deprivation.
"Tell me, what is it you plan to do with your one wild and precious life?" - Mary Oliver