...
If people are going to pick a currency themselves they're probably not going to pick one that constantly devalues. It's nice to be able to have savings in money that doesn't vaporize over time.
So... Looking at 2014 & 2015... Bitcoin's knda out, right?
But hey, you're free to pick whichever currency you want--Bitcoin, Doge,
BTCeanies.
Sadly, others are also free to not take you seriously, and guilelessly laugh in your face as you try to buy things from them (using your coin of choice).