Youth: When we say "youth", we refer more to the youthful spirit of younger guys than their youth in years. Older men can be jaded, bitter, tired, settled. The women that are attracted to younger men are young souls inside, therefore the negative aspects of older men do not appeal, and nor do they have anything in common with them.
Open. Younger men are more open than older ones. They're willing to talk more, explore more, have sex more, laugh more, play more.
Unassuming. Younger men haven't formed as many assumptions. The world is still fresh to them. They're more a joy to be with.
Nice. Younger men are often nicer than older ones. Nicer to women; nicer to others. They've not learned the level of cynicism prevalent in older men. This goes well with the general "niceness" in older women, who, because they're women, have an inherent nurturing quality that stops them from being as bitter as many men their own ages.
Grateful. Younger men are generally more grateful than older ones. They're more thankful for good things that come their way, or little things; they take pleasure in the more simplistic, enthusiastically. This is like a balm to an older woman.
Earnest. They're more sincere in their general approach to everything, which, when compared to older men, is very refreshing.
Ravishing. Not only do all the benefits above render younger men ravishing, they're also far better at ravishing their older partners than an older man would be.
Mature. A younger guy is often far more mature than an older man, and that's a great benefit when dating an older woman. Although many older women are young at heart and in spirit, because they're women and because of the responsibilities many of them have, maturity in a younger man makes for greater conversation and greater connection.
Engaging. By engaging, we mean that younger men are not only more captivating, but they engage more with everything around them. Especially their older partners.
No-nonsense. A younger man tends to have more of a no-nonsense approach than an older one. They generally say what they mean and are more trustworthy because of it.