According to Osho, man seeks God because the mind cannot rest with purposeless, amoral existence. It demands meanings, goals and moral accounts, so it invents questions (Who created? Why? For what?) and projects a God to secure purpose. Oceans, trees, animals don't ask; only the human mind does. True spirituality begins when this compulsive need for purpose relaxes into the simple, playful suchness of being.
We search for God because our restless minds hate not having a reason, but peace comes when we stop demanding a why and just be.