I know many single women over 30 who are alone and with no prospects. Many feel that urge you are talking about, but the problem is that along the way they have alienated a lot of men. That's ok, it happens, but they can't legitimately expect to enjoy the benefit of a good relationship with a good man at a later stage in life when they have spent a decade or more alienating and not cultivating relationships with those men.
While some of them offer a lot in a relationship, most don't offer men anything genuine and unique that a younger woman can offer them. It's a no-brainer: deal with the pushy 35 year old or deal with the pushy 25 year old. Many men just gravitate toward the freshness and vitality of youth. I know I do.
Even without the youth angle, a lot of older professional women have huge chips on their shoulders, a sense of entitlement that will not be satisfied by the set of men that may be interested in them.
Most men, myself included, would be more satisfied with a relationship with a woman who loves and cares for them, than with somebody who makes good money but is perpetually unsatisfied, critical, and likes taking it out on you