I'll retract that 'generally' then, and substitute it with 'always', since that's a mathematical certainty. There won't be any humans that are perfectly balanced with a completely equal distribution of all traits that we assign to one of the binary choices. Barring that, someone will always fall on one side.

Sure, though, we have the tech and ability to handle more than two, but until we get to the point where that's the norm not every situation where we don't isn't one where the sky falling.