From what i’ve observed humans tend to judge others based upon what they know and understand of them and how this relates to past knowledge of social interaction. If one meets a stranger what knowledge does one have pertaining to them? Their physical appearance, their personal hygiene, their general demeanor, do they look like they are part of a street gang? Could they be a threat? A potential sexual partner? Once further information is attained (personality, hobbies, general intelligence etc) then this may become part of the overall analysis of the person in question and initial judgements can accordingly be disregarded, clarified or slightly altered so as to have a more elaborate and detailed view of the person depending mainly upon the perceiver in the situation. However, until this further information is attained (assuming it is) ones judgement shall remain based primarily on superficial factors and past knowledge.
Is this a detrimental thought pattern? I do not believe so. Humans tend to be afraid of what they do not understand with good reason. If we cannot predict our surroundings it’s more likely that they shall work against our objectives and preferences, and fellow humans are an inevitable element of ones environment so must be judged to some degree.
“Yes I see I should have worded my question do you criticize peoples looks. My mistake :-( I certainly do make assumptions based on first appearance whether correctly or not. Time tells. However I do not insult peoples body’s or their ageing process! I also do not value people based on how pretty they are.”
When judging another, criticism is an unavoidable byproduct as without it one cannot acquire a balanced idea of the individual in question. When meeting someone who smells unpleasant one does not think, “What a fantastic dress sense, and their hair looks great, and they seem rather laid back”. No, these will be part of the analysis but the immediate thought, due to it being the most evident to the senses, will likely be, “They smell terrible”. It all comes as a ‘package deal’ if you will and shall remain so unless meeting a perfect human.
Alongside this comes the desires of the ego. Criticism is often conjured when judging an individual as a means to appease oneself. It is not uncommon to compare someone to oneself with an emphasis on attributes that one feels they possess or are relatively good at. For example, if jealous of a persons looks one may remind themselves that said person is not as physically fit as them. It is a tendency generally attached to the more self-concious among us and though this attachment seems to have some validity, it appears apparent that the vast majority of humans perform this ego appeasement activity on a regular basis. It’s plausible that such may be caused by an evolutionary system designed to make us feel superior and as such lower the probability of us feeling abhorrently towards one another resulting in mutual benefit. But that’s just an educated guess on my part :)
Why others have chosen to announce what they deem your flaws could be due to a number of things. The most likely possibilities that occur to me are that they’re genuinely attempting to offer constructive criticism, they’re insecure with themselves in some manner, or they’re saying these things in good humour. It’s difficult to reach a credible conclusion with limited information. My suggested response to these open criticisms is “Talk to the hand” due to its tried and tested ability to act as a reply to anything and everything.