I don't buy the whole men only being attracted to women in their early 20's or earlier nonsense I sometimes hear. Whilst it's true that youth and fertility are linked, men also experience a decline in fertility. The decline tends to happen later, but the difference is greatly exaggerated. It irks me when I see 35 year old men saying "Oh it's biology!" and then proceed to hit on an 18 year old woman. Sir, no. Women don't expire when they hit 25. I'm 22 and I don't find 18 year olds attractive, I can't even imagine being 35 and looking at an 18 year old that way.