I'd like to add that there's also a danger in people trying too hard to avoid bias and losing important information. For example, a man who's a homemaker instead of a programmer is a less attractive partner for a woman. So such an occupation might harm both his quality of life and that of his partner. There is some useful information encoded in cultural bias. Even if that information turns out to be entirely socially constructed, it still has real harmful effects on real humans who go against it.