When I was younger, like just out of high school, I exclusively dated older women. It was always a nonissue, mainly because most people assumed that I was older and more mature than I actually was.
Personally, I loved it, primarily because the older women are, the less wishy washy and less likely to play mind games they are. The vast majority of women under the age of 28 have their heads so far up in the clouds, or their own asses, that trying to make heads or tails of what their goals and intentions are requires far more attention and effort that I was ever willing to give. Older women were just more up front and easier. If they just wanted to bang, they would flat out tell me. If they wanted the slow burn dating, then they would flat out tell me. It was awesome.
Now, I'm in my early thirties and I'm dating a woman who I'm older than by one year. Since I want one biological child, I'm basically forced to exclusively date women who are in their late twenties or early thirties.