In my twenties (I'm 35 now) I discovered how hot older women could be. I love women of all ages and types. I was 23 and dating a 38 year old who was definitely in her sexual prime! She was better than her daughter in every way, mentally, physically, and sexually. Also that year, a friend and I had a couple experiences with a classmate of mine's mom that was incredible.
Don't let age be an issue if someone is older. All in all, it's more of an issue for the older person than it is for the younger person. BTW, my wife is six years younger than me, and I can't wait for her to get into her mid 30's.
(Please don't tell her that, she wants to stay 25, lol)