I use such software to improve the quality of a picture not often to change a persond features, although I have quite often photoshopped a face of someone that is going on an ID for instance or being displayed publicly but only to remove a spot, add a bit of a smile or maybe to freshen up the appearence of a boring looking photo, these are not photos that would be used for remembering a loved ones face etc. I think there are lots of reasons for taking photos and lots of reasons for editing them also.