we take births for enjoyment. We can't tolerate any hardships. We always try to take evasive action wherever there is the slightest trace of hardship. The prime motto in life is to "transfer" the hardships on others.
But, in reality does pleasure give complete satisfaction? No. In my opinion, the yearning period for seeking that pleasure is more "happier" period than the actual fulfillment . Once accomplished our mind will be pre-occupied with another pleasure. It is an endless game.