Now I just discovered this poll and I find I am confused about what you all mean here. Are you talking about straight time fucking? No breaks for changing positions, a little oral for him, a little oral for her, some laughing, caressing, etc.?
I can't say that I have ever thought it was desirable to just go and go and go with no variety involved. For me (and for most women, I suspect), sex starts when you get naked and it doesn't end until you are both satisfied and in cuddle mode. Time actually fucking is fabulous but I do like to include other activities along the way, too.