I don't know what you mean by evidence, but "things have always being this way" is too often the excuse to avoid change. Social change is not necessarily always

I don't know what you mean by evidence, but "things have always being this way" is too often the excuse to avoid change. Social change is not necessarily always good, but rejecting novel policies just because they are not currently "the norm" is not a good principle. Following that line of thought, the Eastern Block from the 90s would have never abandoned Communism because it was "the default" for them.