if there was a real financial collapse bitcoin would turn to dust too. maybe the people writing here trust it, no one else does. people would run to gold or dollars just like always.
it's a nice idea but bitcoin's time hasn't come yet as a lifeboat. it's still a get rich quick scheme in the minds of most people who put money in and they're also the most panicky people on earth judging by the movements to the slightest scary news.
it would be nice to be proven wrong. i don't think i would be. the handful of people in places like venezuela who do use bitcoin are benefiting from the commodity boom that's fueled it that's lasted for years. they're hanging on the coattails of general market success in first world countries.
When a financial collapse happens, nobody would turn to the dollar. It just doesn't make any sense - the dollar is already worthless in a hyperinflationary scenario, and to pick up some dollars would simply be suicide.
I think that gold and silver will still be used for transactions and storing value in a financial collapse, however with bitcoin it's just so much simpler and convenient.
though i have nothing to back up my points with, i think that once the inevitable collapse of fiat occurs, people will turn to bitcoin.