I am a Hindu believer a 17 year old male. This recent question came in my mind so here I am posting it.

God, as in Bhagwan in Hindu philosphy is continuously creating several universe and destroying a few others. Even there are several BRAHMA and many multiverses. Alongside all these universes, God is continuously recurring yugs (like kalyug) in our earth or maybe he just destroys one and creates another one. My question is why is he doing it? What does he gain from this? What is his purpose of doing so? What is his motivating factor? Is all of this is a play or something? Or are there some higher order creatures who do so for their own fun and enjoyment?