Depends if it becomes 'the way to pay'. If it has so much advantages to use it over other currencies, everybody would want to use it.
Then I would say yes.

If it only stays in the realm of speculators, maybe. But then it will be too volatile and in the end never succeed, because then it's really a bubble.
The market cap of Bitcoin is about 10 billion dollar, but when everybody would sell it, it would turn out to be worth a lot less.

But I really believe it is here to stay, because it is a great concept and the innovation has just begun.

BTW, you don't have to own 1BTC to participate in it. A lot of people are scared by the price of 1BTC when introduced.
I know it's psychology, but it is just a random unit. It is now time to use mBTC I think.