Bitcoin didn't exist in 2008 so we don't know how it would perform on such an scenario. My theory is that it's way better than gold for most people with a decent amount of technical competence to get it done.
it certainly might be, but it doesn't really matter what you or i think. if we're comparing bitcoin to gold or expecting it to be a real world hedge asset, what matters is what conventional investors, investments banks and central banks think. in those terms, it seems premature to put bitcoin alongside gold. i don't think bitcoin has "crossed the chasm" so to speak.
If you think that gold/Bitcoin will lose value "after the crisis is over" then I assume you think these cyclical crisis in the fiat world can be happening infinitely.
i reckon it can. it's likely to outlive us, based on the history of money.