<p>I haven’t spent much time in any buildings with single-sex floors, but it seems silly. I haven’t experienced any cons from living on a co-ed floor. Perhaps members of conservative gender-sensitive sects might notice a difference when walking to the bathrooms in their towels, but that is not a major point of interaction.</p>
<p>Single sex floors might be conducive to generating a heterosexual “current” of guys moving to the girls’ floor to hang out, or implicit gender norms, when people think certain activities might be more appropriate for certain floors. Those possibilities irk me rather unforgivably. In a certain floor-segregated dorm on campus, the guys sang for the girls on Valentine’s Day (my opinion withheld). I raised that in a discussion with friends and it precipitated plenty angry language.</p>