I'm Jake. I'm fairly new to MBTI.
Initially my concern was that 16 types wouldn't adequately define the range of human personalities, but the more I interact with other people interested in MBTI, the more it becomes clear that an individuals type, based on the 4 dichotomies, has everything to do with measurable response to social and intellectual behavior. Now, I'm not seeing people loosely fit into these 16 different types here or there, I'm having epiphanies and unlocking a greater understanding of how to be a better friend to these very different types of minds in my life. I'm looking forward to learning more about myself and those around me and I'm confident that MBTI is the key.