You are the one who is losing out on a richer understanding of yourself and others if you dismiss it.

This sounds like the old "skeptics have closed minds and therefore live unenlightened lives" argument, which I'm not going to contest here because it's already been contested a million times elsewhere.

I did check out MBTI and spent a lot of time looking into it before finally dismissing it. I will concede that perhaps I looked at the "crappy" versions of it instead of the "good" versions of it. Unfortunately, I don't have a way of knowing the difference. And I'll try not to let myself be swayed by seeing a parallel between that and similar claims by psychics: "oh, that other psychic is a phony, but I'm for real".