Why is it taboo for a woman to date a younger guy?

~it isn't taboo at all. Most women don't date younger guys because they don't want to have to train them.

Of course, when women get a lot older, they may date younger guys because they want a guy that can still perform.

My Aunt Isabella never dated younger guys until she was in her 60's. Then she found my new "Uncle" Guido who was 25 years younger than she. He isn't the brightest grape in the bunch but she's always smiling. Poor "Uncle" Guido always looks exhausted.

Its not exactly taboo, it just doesn't happen that often. Usually guys go after younger girls, and younger girls fall for older guys. Being older is just somthing that kind of goes with being more masculine, or macho.

Don't know, I happen to like women older than me

its not taboo. i have only dated older women.