dude, i wear my guitar a couple inches higher than you. i don't think you should care what people think. if you are truly playing for the sake of playing your best, you should wear your guitar wherever it best facilitates your right and left hand technique.
I find when I play with it higher, my picking hand is able to remain much more relaxed, thus increasing my endurance
Plus, when I wear my guitar high enough, I can show off my package