Who wears 'em/likes 'em/hates 'em/etc?
I like the idea of them, have a couple pairs I like and wear pretty often, but in the end they just suck. It's always hot here so my eyes always sweat behind them, especially plastic framed shades. I no longer wear anything but wire framed ones for that reason.
Still, I'd say that 80% of the time when I'm wearing sunglasses, they're on my head and not in front of my eyes.