Kirun is right, I'm a fairly successful 31 year old of average attractiveness, if I was interested in dating moderately attractive 31 year old women it'd be like shooting fish in a barrel. But I set my sights a little higher, which is why my girlfriend is better looking and 6 years younger than me.
And yes, the amount of work required to date or fuck more attractive, younger women, is harder. But the fact that "I" was the one having to prove myself, even unattractive women don't seek out men, unless they are extremely desperate, and even then I find it pretty sad and pathetic when it happens rarely.