Why can't I date men my age?

I forgot to add details to my last post. Must have been a total brain fart. Then there was no option to edit. Whatever. I am new.

I have not dated a man even close to my own age for like six years. It is not that I am rejecting the attentions of men my age, I seem to get no offers. All the dates and relationships I have had have been with 20 somethings. Well 25-28. I am almost 40 myself. I am not sure why this disparity exists. Are a majority of men above 30 in long term relationships? Are men under 30 just more horny and desperate? I am not exactly sure.

I am considered relatively attractive but have very little success in my professional life, may be my poor financial situation scares away the men of appropriate age. I do refuse to date men under 25, that is just too young.