If you want to make a river, pour water on the mountain top.
This is only one of many reasons I choose Ripple as a better world currency alternative. There are vastly more XRP's. So many in fact, it could be literally hundreds of year, if ever, that you would need to calculate beyond the 3rd decimal. It's nearly impossible to do this with Bitcoin because there are only 11 million of them and at most 21 million. And that doesn't account for how many have been or will be lost forever. I know what you'll say, "Bitcoin can be broken down to 8 decimal places." What the vast majority of people say is, "Who cares, what a pain in the arse to deal with .00239484 of something." And I agree.
If Bitcoin does survive, it will be as a store of value and nothing more. But that IS a big deal in and of itself. It can not be a world currency because it can not do micro transactions. There's no getting around that. For Bitcoin to make that possible would undermine the security of the blockchain. (From my limited understanding) Some of these discussions, like this one, are actually filled with some sensible discourse on both sides, but in keeping with that tradition, you have to accept logic at some point. What you want Bitcoin to be and what it realistically can be, are often 2 completely different things.
Bitcoin will never be a world currency. Some other crypto very well may be and that could be a good thing, minus the ideological bible thumping of course.
But it's just not going to be a world currency. No way, no how. All that said, hoard away. That's what it's best for. I agree with some sentiments in, "Save" not be a slave to credit. I couldn't agree more.
Bottomline: Hoarding Bitcoin does not undermine it as a world currency, because it will never be a world currency. It is a store of value, use it as such.