Because the way of how they look, or talk does not form who they are. a person with tattoo can be nicest person you've ever met while a person who wears a suit can be cruel and no care in the world
It is SO important to get to know someone first before you form an opinion on them for multiple reasons. One that is judging people and no one deserves to be judged. Judging people defines who that person is not the person judging them. Two, you might dismiss a great future friendship or relationship because of an initial judgment which you will always regret.
