As an older guy, I do find myself attracted to younger women (as well as to those my own age or older.) I've got as far as dating a couple of recent graduates, but it didn't feel right to take it further mainly due to our respective friend circles being so different - in my case, I look for the relationship to help facilitate me socially. Still, the memories of the dinner dates I did manage kept me on cloud nine for quite some time afterwards! Also, I found that in both cases online rapport carried over into not being lost for words at all on the dates and the contrasting perspectives keep the conversation interesting and pretty much guaranteed to be a learning experience.
Older guys get some stick for chasing younger women as if it is all about youthful physical attraction. One alternative interpretation which resonates with me is that older ladies can tend to be commitment-phobic (as I am a bit myself) and also shy about their bodies around younger men. My most recent ex moved onto a guy who is older than her - she told me being with an older guy makes her feel younger! Younger women tend not to have suffered so much hurt in relationships and are I find are therefore more optimistic in that area.
So, girls, avoid older guys or only flirt with them or dive in off the deep end - whatever! Any category of relationship brings its own challenges. If it is only short-term then not so much worries, but otherwise good to think through, 'when I reach 30, he will be 50...' etc.