I gotta new angle for ya...I don't believe they are looking for a mature daddy figure. Or gold digging in general. I think they are less intimidated by the older males. We older guys are laid back, more apt for conversation, and I think the young girls misread that as older guys not being as sexually agressive.
I mean watch some young guys out in a public environment (bars, parties, whatever) they are being aggressive, extroverted, doing the ole dominant Alpha male thing. Some inexperienced girl might read that 2 ways...1. Dumbasses or 2. out to score big, score now, and move on.
Reminds me of the old farmers joke about the old bull and the young bull sitting on a hill top...
Young bulls sees all the cows grazing below and says " Hey lets run down there and mount up a cow"
The old bull says "nah, lets walk down quietly and mount them all!"
"Industria, Virtus, et Fortitudo"
(means build it right, ride it hard, and never let up!)
Just Like lightning, only faster!