ok.
i'm 28, engaged to a man that is 47. we've been together 4 years, have 1 child together. i have never dated anyone younger than me, but at the same time never had this much of an age gap. i didn't say to myself, i'm going to go out and fall in love with a man older than my dad (only 3 months, but still older). it just happened. keep in mind not all women are the same.
why do i like older men? well, there is of course the whole "i'm mature for my age" thing. it's true. i am. he is stable. as strange as it may seem, we have a lot of the same interests and lots in common. he's unlikely to cheat on me, but at the same time he's the only guy i have never cheated on. really, it's a lot of the same things in any relationship- he makes me laugh, we enjoy each others company, we are attracted to each other. we put each other first, in other words my main concern is keeping him happy, and his main concern is keeping me happy. he just happened to be at the same point in his life as i was, despite the age difference. it works for us, not everybody.
i'm not sure where to go with this, hope i gave you an answer that helps.
added:
it's not about money. yes, he makes a lot more now, but we started a bussiness together and he makes $60+ an hour 50+ hours a week. but, 4 years ago when we met, he was around $10/hour and no overtime. money had nothing to do with the feelings.