Being the data hoarder that I am, I just bought 4 8TB drives, bringing my total to 56TB. I don't think I'm going to be running out any time soon (but then, I always think that, and I always do anyway).
The fun thing about being a data hoarder, as opposed to any other kind of hoarder, is that the stuff I hoard actually shrinks over time while I'm adding to it. I'm envisioning an intervention that my friends and family may have for me in the future, with all of us gathered around a table containing one tiny, barely visible, future 100PB data storage device, and everyone going on about how "you can't go on like this, you need help!".