If the success of an asset or currency is predicated on a doomsday scenario then that asset/currency is doomed itself.
A fair point, from a US perspective since we've never destroyed our currency and had to re-issue it. Lots of other countries have experienced that doomsday scenario - just ask Argentina how many times they've rebooted their peso in the last few decades. Things do blow up - it just hasn't affected your latte drinking, much and yet.
It should read. "Is the Greek financial crisis an opportunity for Bitcoin?"
And thus, the answer is "NO!"
Agreed, it's not an opportunity today. It could be an advertisement for Argentines or say Chinese concerned about the state of their monetary system and what that means for their personal wealth in the future. If 10% of one's cash holdings were BTC, worst case one is down 10%. In the best case, one is down 90% since the fiat is confiscated or worthless, but there is a hedge if BTC takes off. Localbitcoins.com - there's always a way to get some cash for your BTC. Can't always say that about your bank account...
Besides, gold has never been a good money substitute except for the very rich, and they probably already have their wealth stashed away some place abroad. Gold's value comes from having lots of it. If you want to buy a house having a few pounds could help you. But if you have just a few ounces of gold, how would you spend it? Shave it to buy a loaf of bread?
Exactly why the idea of a digital gold would be useful - no concerns about divisibility or spending it in places where you can't be physically present.
"Experience has proved that some people indeed know everything." -- Russell Baker