A study conducted by David Buss investigated sex differences in mate preferences in 37 cultures with 10,047 participants.In all 37 cultures it was found that males preferred females younger than themselves and females preferred males older than themselves.These age preferences were confirmed in marriage records with males marrying females younger than them and vice versa.This study used 21,245 participants between 18 and 65 years of age who were not involved in a close relationship.However, human males tend to have more parental investment compared to mammal males (although females still tend to have more parental investment).Thus, both sexes will have to compete and be selective in mate choices.Despite the unfortunate rise of the cougar phenomenon (not that dating younger men is unfortunate, just the use of the term cougar), it seems as a society, we're still more into May-December relations when the guy is the December. I'm not sure I actually know what that expression is supposed to mean. But what I'm trying to say is, more people still think that a romantic relationship is ideal when it's between an older man and a younger woman.
One of the concerns of relationships with age disparities in some cultures is a perceived difference between people of different age ranges.
I will say that while I don't have a rule against dating younger guys, I probably wouldn't consider it my ideal dating situation either. How to date outside your age: The DOs and DON' Ts of Dating an Older Man Dating: 4 Reasons to Date a Younger Man Scarlett Johansson and Sean Penn Caught Canoodling!
Stupid society and its conditioning that men look handsome and distinguished as they age while women don't.
A study released in 2003 by the United Kingdom's Office for National Statistics concluded that the proportion of women in England and Wales marrying younger men rose from 15% to 26% between 19.
Another study also showed a higher divorce rate as the age difference rose for when either the woman was older or the man was older.
These differences may be sexual, financial or social in nature. Socially, a society with a difference in wealth distribution between older and younger people may affect the dynamics of the relationship.