Every human being wants to be happy, just like we don't want pain and we want pleasure. This is essential in not just human beings, but it seems even most animals can be seen wanting to be happy. Therefore, is it required? Is it necessary? Yes, that is the purpose of our existence. If there was no motivation for us to be happy, then we would not seek achievement or even fulfilment. We would not ever go to that stage of enlightenment. What is enlightenment? Enlightenment is that stage where we are liberated from the suffering of the body, mind, ego, that stage of eternal bliss that comes from truth consciousness. But unless we seek happiness, we will never reach that stage. We should not seek pleasure. We should not seek passions and obsessions. Those will make us sink in this world. We must seek eternal bliss, we must seek the truth, we must seek the Divine and this is seeking eternal happiness.