One of the more tiresome arguments endlessly rehashed on the Internet is over the status of race and sex/gender as social constructs. Clearly, both have some biologically determined and some culturally constructed qualities; I’m more on the biological side than most people, and find stories like this fairly frightening, but I can also point to some people who I think are silly in denying that historically contingent aspects of culture have power to shape identity. Everybody has a left (and a right) wing.
Part of what makes this argument so tiresome, apart from the mendacious treatment of evidence one often encounters, is that just because something is socially constructed doesn’t mean you can just command it to go away. As Gabriel Rossman points out, you can’t click your ruby slippers together and say “there’s no gender any more” and whoosh, there it goes.
But the other reason the argument is boring is because lots of things are much, much more clearly social constructs than race and gender are, and a lot of them are pretty good things. Property, law, marriage, art, music, architecture, cuisine: the good stuff in life, with few exceptions, is socially constructed. Some of them you might be able to make go away (to an extent, for a while), but why would you want to?