The selfie alone is pretty objectionable. Pictures are meant to be taken of remarkable things and treasured moments. A reunion with old friends, a sunset, a monstrous traffic jam: all of these things can look remarkable under the right circumstances with the right eye behind the camera. Odds are that a picture of you, alone, squeezing in your cheeks in is not remarkable. We humans are all vain creatures: just do yourself a favor and try to hide your vanity by making sure that there are friends, a sunset, or a traffic jam in the background of that selfie.