I started singing it because it was so much more powerful than the beige, ice-cream music that was pop then.

I carried on singing it because I could get away with my level of musicianship, and I couldn't/can't play jazz well enough.

I still sing it because I'm human, singing songs about humans, written by humans, and I'm old enough to generally ignore the PC brigade. Or abuse them, if they ask for it.

As Bat Goddess says up there, those who ignore history are destined to repeat it. Additionally, however, there are, IMO, worse consequences than repeating history, such as being PC with non-PC enemies.