Personally I think it's the social issue. There's women with
  loads of testosterone and upper body strength but you have
  things like co-habitation and such. I think that's the real
  concern. We're still in a society with separate male/female
  bathrooms. We're not ready for that yet as a society, nowhere
  near. I got a taste of it at hampshire College, where the
  bathrooms were shared and it was no big deal.

  But that's the fantasyland of college.