Of course it is used to judge you -- a picture paints a thousand words.
That is not to say that you must be beautiful or handsome, young or shapely -- but how you present yourself speaks volumes about your self-esteem and personal aesthetics.
You could be the most attractive and sexy individual to ever contact the
Church of Satan -- but if you send me a picture of yourself sitting on Granny's flowered sofa in your very BEST tee shirt and flip-flops, sneering and giving me the finger, you're durn tootin' I'm going to judge you.