Even in my personal life I prefer older men. I don't see why a girl wouldn't.
Things that I find in the older men I date that attracts me to them:
- respectful
- emotional stablility
- financially secure
- often more confident and self assured
- more likely to be into traditional gender roles like I am
- can offer mentoring/guidance
- they know what they want and what they bring to the table
- usually not into the bar/club/partying scene
- ambitious
- intelligent
- chivalrous
- maturity
- lots of life/sexual/BDSM experience
- well established in life and career
These are just some examples. Do all older men have these qualities? No. Do some younger men posses these qualities? Sure. But the pool of men in their mid-30s-50s has much more potential than the pool of the boys my age.