A study by professor David Buss at the University of Texas claims that older women are more sexually active than younger women. The study suggests that as women approach menopause and infertility they are less likely to worry about bearing children and therefore more free to enjoy sex. 

Many of the participants in the study were recruited from Craigslist which may skew results significantly.

The study  has evolutionary implications and comes at the heals of another study showing that older men are now more likely to contract sexually transmitted diseases as drugs to combat erectile dysfunction become more popular.

Conclusion: Old people will f#@k themselves into extinction.