1. Guys significantly younger than you are old enough to be hot. See Joaquin Phoenix.
2. The sixth grader who had a crush on you when you student taught his class is married.
3. And has two kids.
4. And a PhD.
5. Your workstudy student calls you "mature."
6. Your kids are pushing puberty.
7. One of your college buddies is going to be a grandma in January.
I could go on, but my stamina ain't what it once was. I think I need a nap. And maybe some prunes.