Back in the day, I wrote an article for '& Magazine' in response to a question on G+ about "making half-elves more interesting". 

I'm not sure I'd present this idea this way these days, but here it is if you want to know more: 

Link: http://www.and-mag.com/wp-content/uploads/2016/09/and-mag-i13.pdf 

PS - In my eyes D&D is an escapist game, not the real-world. In 'Star Wars', 'Raiders of the Lost Arc' and 'Where Eagles Dare' the baddies are baddies, innately bad, and we don't question it (because it would spoil the escapism fun of it all).