Pardon my slightly crazy eye in this pic… I don’t know what was *that* shocking… :)
I think that the biased shape gives also a nice “turbanesque” touch to the whole hat (and keeps the top of the hat slightly lower & near the nape… a good thing when you wear a tall hat and you don’t really dig the smurf-look).
…but the best thing is: it perfectly hides the jog when knitting in the round!!!!