Why are older women less attractive?

As I was off most of the day today I had time to reflect on matters related to my personal life. This topic is not new in my head as it has been troubling me for quite some time.

"Why are younger women more attractive?" It would make more sense if we are attracted to women our age since those are usually what we get anyway. This is not a problem when we are 22 but how about if you are in your late 20's, early 30's, or even older.

From an evolutionary viewpoint it is understandable, men and women look to mate with those that will benefit themselves and the species. Younger women mean more childbearing years as well as the physical ability to assist in home building, physical labor, and protection of the young. From a woman's perspective a younger male means greater strength, this translates into having a better ability to protect the woman and her offspring, as well as a greater ability to hunt and gather food.

In our times a woman's biological clock, though improved, still exists. The ability to protect the young and home building are likely less relevant. The hunting gathering benefit of a younger male though is arguably non existent. The ability to bring in food, build a home, and protect is now related to financial security which invariably is inversely related to age.

So why can't I get a younger woman. The answer must lie in the fact that our genetic makeup hasn't caught up with society, and in the meantime I am left without a (good looking) date.