"Female Tinder usage data was collected and statistically analyzed to determine the inequality in the Tinder economy. It was determined that the bottom 80% of men (in terms of attractiveness) are competing for the bottom 22% of women and the top 78% of women are competing for the top 20% of men."OkCupid:
"women rate an incredible 80% of guys as worse-looking than medium. Very harsh...
Females of OkCupid, we site founders say to you: ouch! Paradoxically, it seems it’s women, not men, who have unrealistic standards for the “average” member of the opposite sex."
Basically, my theory is that online dating has given women many more options than they had back in the day, so now they're pickier. Even if a woman doesn't use online dating, she knows that option is always there.