To the extent that MBTI is a convincing model for personality study, I have tended to especially like INTs for their quiet clarity and even-tempered approach to life. Those I have known who most closely match the descriptions in the MBTI literature and who have a level of maturity have been the people I often admire the most and feel most comfortable including in my life.
That being said, there is a strange irony i have noticed in my years of being on these forums. For some reason there are people with INT by their name who approach life in a fundamentally judgmental manner - especially in social interactions. I think this might result from a combination of social pessimism, a limited ability to process and respond to emotional communication, and an assumption of being "intuitive", which is assumed to mean one can make accurate snap judgments. It's possible that projecting the judgments is related to receiving judgments in real life, so that it can become the assume style of social interaction. There can also be confusion between "telling it like it is" and "telling it like my prejudicial assumptions think it is". This can result in suspicion in the presence of emotional communication which results in judgments such as: the person is manipulative, this person is fake and insincere, the person pities self, has no integrity, is not intelligent, etc. The worst offenders have typically been banned, socially rejected by the INT norm, or feared and respected, depending on their own skills at communication. There is at least a thin layer of common judgments present in the norm. There have been examples of public shaming and other methods of control over the years on various forums to act out these judgments.
My point is that the extreme cases of judgmental behaviors are notable. It is an ironic phenomenon because the true type by nature is arguably the least judgmental of any group of people.
Edit: I am a little uncomfortable saying this is a reason "why INTs suck", since I've been friends with more than one of the worst offenders over the years who were rejected by the norm. It's pretty clear that life is much more arduous for the judger than for the judgee.