You asked....
My experience with the young girls is that they are more interested in getting me out the door as quickly as possibly. NOTE: This is past experience as I very, very seldom see a girl in her 20's anymore. Thus, for me (personally) I prefer seeing ladies in their 40's or 30's at youngest. The song "Older women makes beautiful lovers" has more merit than one might think. An older woman is not as likely to have as toned a body as a young girl, but she more than makes up for it with skill and one-on-one interaction out from under the sheets. Example: I did a rare hour appointment a couple months ago, rare because usually it's not worth it due to raising costs and the fact that I'm usually a one-shot-wonder. But I decided to give this woman a chance. 1) Not only did I (she) break the one-shot-wonder streak, but (2) in between MSOG she actually knew how, and enjoyed, laying in my arms and ENGAGING in interesting conversation.
This is just my personal experience. Often I'm an in-and-out kind of guy. I'm busy and don't always have time to mess around. I find young girls have less respect for my time than older women. I refuse to play the "wait/delay" game.
So that's just a couple examples from one guys perspective.