I will absolutely not be alone with a female as a male if I can help it.
One accusation of ill-doing on my part and my life is essentially over.
Conversely; as a male a female is quite likely weaker than I am, thus the risk to them is that I cause them injury or force them to do something. Which is a horrendous thought and of course I would never do such a thing; but from a certain perspective it _could_ happen. The same way I could potentially say something deeply uncomfortable to them.
So I would understand why females would not desire to be alone with males.
Just my 2c
EDIT: downvotes? Really?
Remind me never to air my concerns in public again.