So you save bitcoin for fun also, and you will use it if one is necessary?or maybe you will use one if necessary. I save bitcoin because it helps me financially too, because of bitcoin and some of my investments, I always pay my bills on the right time, not in the past where I am always thinking where to get money to pay it. I pay some of my bills online,though some of them dont accept bitcoin so I need to convert it first. And I didn't think that there are smartphone of bitcoin, lucky you, you are the first one to have it.
Yeah even I am saving bitcoins so that it can take care of my expenses at the time of emergencies and its always good to save some amount of bitcoins as you never when you will be in need of money so its better not to spend them and use it when need arises.