[B-Con]

There do seem to be patterns in personality, and I have found MB to be very helpful in getting a high-level overview of another person's general approach to the world. Reading the descriptions and discussing it with people led to a lot of "you think that way?" sort of moments from both sides. Very informative.

I've found almost no helpful science on personality categorization (Big 5 is minimally helpful), so until there is I find this a useful starting tool.

As a side note: The most misunderstood aspect of MBTI is that it's purely a system for categorizing high-level approach toward action and information in life. It's not what you must do, will do, can do, can't do, etc. It's only about certain aspects of outlook on life.