"What would people think?" How many times do suppose you have asked yourself that question? Why do you suppose you ask it?
Perhaps you are vain and care how you look?
Perhaps you are insecure and do not want to appear stupid?
Perhaps you are ambitious and need to be admired?
Perhaps you have a blemish and do not want it noticed?
Or, perhaps you were simply well brought up to keep in mind other peoples' views simply to be considerate.
It really does not matter what reason is behind the question. As one wise friend said years ago in answer to 'What would people think?'; "Don't fret, because if you only knew how much they think about themselves and NOT about you, you would not worry what they think!"
That may not be true 100 percent of the time, but it surely is still very good advice.