Obviously, young men are obsessed with sex. It dominates his thoughts, drives his actions and defines his self-worth. The hormones are raging, libido is pumping and at some point he realizes that a woman is a woman is a woman, no matter what her age.
Ladies he previously only saw as OLD like his parents suddenly become attractive and attainable. He begins to see that an older woman is comfortable and confident in her own skin and with her sexuality.
He soon realizes perusing an older woman is nothing like chasing after girls his own age. It means a big step up in attitude, maturity and performance. Like going from High School sports right into the Pros. To be able to satisfy her on an emotional and physical level is to affirm his own ability to compete in the big leagues. That challenge is rewarding.
He sees her as an exotic new variety. An exciting new flavor to try. She is world wise. She has life experience. Her goals are clear. Her desires reasonable. She enjoys the simple pleasures. She takes her time. She thinks things through. She knows what she wants and he wants to give it to her.
Young men have an burning desire to prove their own self worth, both to themselves and to the world. Whether they admit it or not, men need the validation. The ego is a fragile thing, easily bruised. A mature woman understands this and is very good at convincing a man that he is a super hero both in and out of the bedroom.
After all, she has done this all before and she is good at it