Personally I don’t think I would date a younger man, but I don’t see anything wrong with it. However there should be limits nothing more than 5 to 7 years younger is a reasonable limit in my opinion anything more than that looks weird to me, you don't want it to look like you're a cradle robber or you're dating your daughters boyfriend.

Younger men who date older women who are 15 or more years their senior in my opinion are just using these older women, because they know that sometimes desperation and loneliness are a major factor in these women.