I can pick out most American accents, British and Australian sound the same to me, as do Scots and Irish. I don't judge people by their accents, I'm more than happy that they just know/learned English and that I can understand them.
I have a thick Long Island accent, so I don't have the luxury of being picky. I have try hard to enunciate and speak slowly for many ESL (English second language). Nowadays I can speak accent-less English, which I use in college and any professional settings since I was told it would affect my future job prospects; I forget sometimes and it comes out, and get ostracized for it.
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"In the end, Darwin always wins" - Me