I, too, took a lot of personality tests 4-5 years ago. Briefly got a bit obsessed with them, particularly MBTI (Meyers-Briggs). The problem with these tests is that they play on the archetypes that we would like to be. Also, the minutia of being a living person can not be captured by a system with so few inputs.
Anyhow, I still think it was very helpful, because it got me started on a track. Exploring intuition vs. sensing, thinking vs. feeling got me thinking about who I was, and how I respond to things. I wouldn't have been as rigorous was it not for the fact that I constantly thought about what my 4-letter combination was. I've probably thought I was 8 of them during my studies. Always an intuitive, though.
What I think is particularly bad with these tests are the way they highlight the personality's shortcomings or dificulties. They are portrayed as the opposites to the good parts of the personality, that you already resonate with. Since you resonate so much with the good parts, you can sort of logically repulse the shortcomings as "that's just the way I am", and then sort of brush it off. At least I found it to be the case.
Anyhow, I recommend the MBTI still, since it is what got me started on this track, and I've never been the same after spending the past 5 years introspecting.