I agree that with the young guys (before they've had children), it's usually more about "bagging a cougar." Every time I've been out in the past 15 years, I've had lots of young guys hit on me. I've told them, "I'm old enough to be your mother!" and the say they don't care!
The reason they don't care is that they aren't looking for a soulmate in me--they're looking for a bed mate! It's a thrill for them to be with an experienced older woman. But when they get mature enough to want a family, they'll be looking for someone younger. I had my heart broken by one about 10 years ago--should've known better. I just let my hormones think for me. (Duh!)
So guard you're heart, ladies! They're tempting, but they're dangerous!