This is an interesting debate and more so with the added input of Pompa and Gramps (don't go boys!) They do imply however that it is women who go 'off the boil' whilst they remain thrusting, virile and needy. Therefore they need to have their needs fulfilled somehow.
It all begs the question - what exactly is it that turns many young lusty women into disinterested and reluctant participants as the years go by? Do these virile and needy men know how to keep their women 'on the boil' for instance? Couldn't women turn the tables and say, 'well, I WAS needy and virile too, but you didn't learn which buttons to press nor how and when to press them, so I lost interest'
Come on boys, its not just a case of wham bam thank you ma'am - and if there's no wham bam, go to the computer! Think about it!