My hubby is 8 years older than me,and I hate to say it but age really does make a difference(IMO). Older guys have already been places and lived things that you have not,therefore in a lot of cases,they have no desire to redo them.
Plus, as far as females wanting an older men,well I think it has a lot to do with security(job,financial). Let's face it girls, by the time a gal is in her sexual prime,a man's "prime" is over. Hat's off to the older gal going for the young guy:-) LOL