Ill probably be dead by then. And I guess bitcoin will be too.
But the eventual lack of inflation is not what I see as its strength, I see it as a (long term) problem. Id have preferred a small but predictable inflation rate, but as it is, its not exactly useless, I see bitcoins biggest appeal as a transaction facilitator, to replace or complement paypal, western union etc, but not a store of wealth that will replace fiat currency. Or gold for that matter.
Anyway, thats another topic, just wanted to refute the idea that "supporters of bitcoin" could not possibly share Krugmans idea's. Economically Im much closer to Krugman than Ron Paul.