Accents are amplifiers. What I mean by that is, if you're hot, an accent (Southern, British, Columbian...pretty much every accent except a Russian one) makes you so much hotter! Think about when you meet a cute girl with an accent and you tell your friends about her. Her accent is one of the first things you mention: "Dude, she has this super hot Tanzanian accent!" Buuut...if someone's ugly and annoying, an accent makes them even more unbearable: "OMG, he sounds like Sling Blade."
So you see, accents are amplifiers. Whatever you are...it makes you more that.