Personally I like most of the men in my life. Sure, yes, I have to be wary at times (because "most" doesn't mean "all"), but overall men are just fine, on average. So I would likely select a mixed block over a women only block. I'd just make sure the doors are solid and the locks work well.
But I'm not all women and I can see rather unfortunately sizable sets of women who would far rather live in a block where there's only other women around them. And there's enough diversity in the world that we should be able to accommodate those with that need or desire.