Myers-Briggs has as much meaning as you put into it, honestly. I don't think it should be taken TOO seriously, but it can be a fun little thing that helps you recognize patterns between yourself and your friends!
Sure, but my therapist encourages me to reject all those kinds of tests because she says instead of trying to fit in a box, I have a tendency to hide behind them.
The thing about these tests, is that they actually can identify thinking patterns. There are 100% correlations between certain types being
more likely to have certain interests too. This is not always the case of course, and no two people are the same regardless. It's still pseudo science at the end of the day, but personally I did take an interest in it. I'm not interested in MBTI communities in themselves though, it's all about people trying to flex superiority for their type, while trying to put others down for theirs because "who even cares about x" etc.
Cognitive functions are better when it comes to this, although still pseudo science. For example, an INTP will have:
Ti (introverted thinking)
Ne (extraverted intuition)
Si (introverted sensing)
Fe (extraverted feeling)
There are definitely very clear correlations when people have these traits. The Ti / Fe axis and the Fi / Te axis are very obvious with a person, same with Si / Ne and Ni / Se ones.
From my own observation, an example is that an Fi person is more likely to be annoyed that a person is doing something that they personally feel is "wrong", however, an Fe person is likely going to be annoyed if what that person is doing is affecting other people, and that's what makes it "wrong" to them.
It is still something not to take overly seriously to the point that you let it define who you are, but you will most likely have certain thinking patterns and that's just how our brains work. I never liked the idea of "people being put into boxes" as even mentioned in an above post here. It's as silly as saying "I am only capable of X and Y because of Z". I don't even agree that anyone who even has a disorder should ever limit themselves in that way either. Anyone who has anything, whether it's ADHD, Autism etc. None of those things should stop a person from thinking they're capable of anything, because they're still capable as long as they can believe in themselves.
EDIT: I just found this about Fi vs Fe, I think it makes sense:
Fe believes that morals are universal to the situation and do not change based on the person. Fi believes that morals are universal to the person and do not change based on the situation