I haven't ever really thought about that. It seems that people are, most often, satisfied to fuck and flee. Many, if not most, of my sexual encounters felt rushed- someone had a class, or there was beer to drink or friends to see or a show to do...sometimes we just wanted to get off, get dressed, and get on with our lives.
The idea of patient sex is something I certainly haven't thought about, maybe ever even experienced- and now I'm thinking about it.
I don't know if I want to be lost in copulation for hours, but to fall slowly from touches and kisses, giving time for both parties to parry and thrust (as it were, ha!), would be.. lovely. When I was younger, I envisioned sex just that way- slow, gradual, natural. I don't know what happened...my experiences were so much different. My introduction was scientific, methodical- without passion, without desire. After that, my encounters were largely rushed, or meaningless, or empty- or wrought with power struggle instead of emotional desire.
Wouldn't it be nice to have sex without worrying, in between moans, what the next obligation is? What responsibility that instance of indulgence is compromising?