I can't tell you how many times I've been looking sharp with my shades on, noticed a smudge mark, and destroyed my cool image by trying to fog up the lens and wipe it down. Half the time I even end up having an asthma attack! But now my lame days are behind me thanks to this.
Okay, who am I kidding, I'm sure I'll still find ways to embarrass myself. You hear that, subconscious?! That sounds like a challenge!