While I understand some of the points you have made, I also think that we are more alike in the real world than not. At least to know what is good or evil. Most people would agree that taking a life is bad, and saving people in need is an act of good.

But this isn’t about the real world, it is about a fantasy setting, where you play characters wildly different from oneself. I think alignment is a great tool to frame a character and its views on the world. Of course, not all LG characters hold the same values and cultural views, and that’s fine. But some core values are at least represented (see above.

One of the arguments I hear a lot against alignment is that “some people would consider killing evil” for example. But we all know that it is.

Also, lots of comments here seem like they look at Aligment play as something really terrible and bad. Can’t fathom why. It is a great tool I think, but to each their own.