Why do men have willies and women don’t?

Question: Why do men have willies and women don't?
- Keywords:
  gender,
  men,
  women
Asked by nilokoko to Amy, Sarah, Will on 21 Jun 2012.
- Sarah Martin answered on 21 Jun 2012:
  
  Hi Nilokoko!
  
  Because men need willies and women don’t! Willies are actually a great invention in reproduction, as they greatly help keep the fertilised egg protected. Now if men didn’t have willies, the ovaries and uterus of women would have to be further out of the body, probably in a place that’s much harder to keep warm and protected for embryos to grow in!
  
  So evolution clearly saw some sense in bringing about male mammals with penises and female mammals with nicely tucked away eggs waiting to be fertilised!
  
  🙂 Sarah

Question: Why do men have willies and women don't?