You took a test.. to see what a result would be. I wouldn't classify this as a "need". Ever.
It can mean a great deal of things to all kinds of people.
Self-reflection is not the easiest thing in the world, especially with the enormity of some ego's, or with the lesson's society has taught us.
A personality test can Isolate tendency.
It can be a tool for some to see the areas they may need to work on.
It can be validating for others who have felt misunderstood.
It can be an excuse for some not to grow at all... and simply throw up their hands saying... "THIS IS WHO I AM" ....I cannot go outside of this framework. "THIS IS ALL THAT I SHOULD EVER BE, WILL BE, & THIS IS ALL TO EVER BE EXPECTED OF ME"
Life is life. You can navigate its waters and learn its intricacies.
You can be bound TO SOMETHING... or be BOUND FROM IT.
At the end of the day there are 5 million choices. There is not 1, that is "The 1".