The Reason is Love.

Instead of wavefunctions collapsing spontaneously and in the process giving rise to consciousness, it must be remembered that there is only one consciousness causing the wave function collapse or rather, there is only one consciousness which causes a great many waves. Yet since I am not a fan of wordspeak; I suggest the following simplification. Waves are many but sea is one. So why then the appearance of many waves? Truth is simple. Although the sea is one, it is also not good for one to be alone. As such we arrive at a grand theoretical reason of everything. Everything is the sea. The sea is self. The purpose of self is companionship. If I may add it is quite alright to call the reason love.
~ Wald Wassermann, Physicist