Life as an equation?

I only laugh at those numerous "character tests" found generously scattered everywhere - in books, magazines, internet. And with time, the popularity of such tests only seem to be on a rise. Ofcourse, with no disregard to others' feelings, I would only want to wonder why is that people seem thrilled when such tests 'claim' to reveal what they are - infact people would know better about themselves - won't they? and therefore, do they need a test for that?

What I deem to be funny is the way things are interpreted.
You like to go by the sea for holiday? then you are a sober and dull person.
You like to go to the hills? you are full of energy and enthusiasm.
And some poor little souls, would even find all ways, totally disjoint from their taste and mood, to alter their likes and dislikes just to fit into that 'seemingly perfect category'.

As I keep saying, life is such a wonderful thing and I just can't accept it as an equation. If x=y, then z=?. Mathematics and Science, according to me, will just not work on life's boundless horizon.

I like black and like black because I like black not because I am boring or dull or negative.

Isn't it high time to stop analysing people by such tests based on their likes and dislikes? And if you notice the analysis generally has two shades - a positive one and a negative one and generally the positive one carries the person off his feet and then the negative one brings him back making him remark "yeah! how true....".

And there are many such illogical attributions :
black for negativism, white for purity or goodness, height for success, depth for down fall...
Well, its okay as far as you attribute goodness to something but why attribute negativism?