I see the merit in Bitcoin but with a define amount of them, it's not really going to be a currency of the future.
It's more like a limited edition book... except it costs £17,000 or whatever for just one, and you can't do anything with it, like read it, or look at it (paintings), or drive it (old car), or live in it (a house), nor can you eat it (expensive food) or drink it (some old wine) ... nothing.
Sort of makes me think if you could own £20 million all in pound coins, surely the value of the £1 coin would go up as there wouldn't be that many around.
Then, look who just happens to have them all, and could sell them at a higher value than the original £1.