Holding the btc for a long time has its value. Whenever the btc is exchanged to fiats, it has its value. Only the profit would differ. I will to save the bitcoins I earn now as the price started growing up and it would still go high in the future, probably at the end of 2016. Hope to have a good hike in price in 2017.So save as much as possible to gain a profit to what you have saved.