Man asks for guarantee whenever he buys anything. But where is the guarantee that he will live in the next hour? He prefers life time validity even for a SIM card but what about his life time validity?
We came from nowhere and are moving into nowhere. Man tries to get quality product but does he ever take any effort to make him a quality product so that he will be lovable and useful for others?
Everything is always new. The tree you saw yesterday is not the same today. The river water you saw few moments is not the same now. Everything including you is always new and fresh.
Enjoy the present moment and don't be lost in the past sad memories or in the unpredictable and guaranteed future ambitions.