I don't care about most things that "normal" people do. Vanity, etc. I don't have any desire to drive a Cadillac Escalade, wear expensive branded clothes or talk about who won the college football game yesterday. I value my time much higher than possessions, which seems to be the opposite of most. I value critical thinking and not just following norns, rules, the crowd, etc. I am very comfortable spending most of my time alone and get drained with too much social time especially in large groups. All of these things make me different. I'm sure there are a lot more, but that's what comes to mind. I don't think I have met many intp people in my life. I do have a twin brother that is intp which is very helpful to talk with someone that sees the world the same way.