Why? That's the ultimate question. "Hey baby, I hear the blues a-callin' Tossed salad and scrambled eggs.."
Yo, 42 is a description of reality and how it is ordered.. The question is: How is reality ordered/layered..? 4 to 2 is enfolded order.. from the highest which is the one and many.. down to two, which represents division or dichotomy and then down to one which is the minimal measurement itself.. So we see both 4 and 2 represent order which can only happen through division. Then we can ask what a thing is for in a divided reality.. hence the 4!
Actually real answers lay in 710. See the mass media wants to think its 42 so you will follow them too. Like a sheep in herd. So that you won't really be heard.
I believe the reason for the useless answer of 42 is because the ultimate answer to life is meaningless.. so go out and create your own answer to life [the ultimate meaning to life IS LIVING IT], no one will give you the answer you seek because it does not exist
If you want to find the secrets of the Universe think in 3 6 9. Energy, Frequency, Vibration - Nikola Tesla