Most people would probably still hold but we know how centralized this ecosystem is and if few big sharks decide to sell - it could plummet the price.
I doubt it.
I live for the day where the "big sharks" you refer to will decide to sell their entire Bitcoin stash.
It will be a golden dawn for the rest of us!
The only reason why Bitcoin's price can go that low is, like pooya87 said, some flaw in the protocol that is irrecoverable, like sha256 being reversed or something like that. If this happen, then yes, Bitcoin (and the rest of the internet) will be screwed.
Rest of the Internet will not be screwed because protocols will update, now the question is if Bitcoin will update (hardfork) it's protocol to fight off quantum computers.
Cryptographers are already aware of the danger and are already testing algorithms against quantum computers.
I've talked to few of them and they said it's not more than 10 years from now that most of the current protocols in use will need to update their code or face being hacked, keep in mind that Bitcoin is a high-value target.
It's not a question "IF" but "WHEN" and we approximately know the "WHEN"
As for the "golden dawn" you're talking, you have omitted the part where I talked about the network security being screwed because of too low price... anyway, have fun - it's your money.
...If bitcoin fall to $3000, know that something terrible is happening in the world. Something like the world is attacked with nuclear weapons or an event that is making the world to go into an extinction.
World does not need to end for Bitcoin to end... there's plenty more scenarios:
.1 Bitcoin not hard-forking to combat quantum comptuers
.2 Bitcoin mining being unsustainable due to diminishing block reward and no increase in transactions
.3 Regulations that will force to pay tax from unrealized gains
.4 One of the sharks selling a large amount of coins
.5 Bitcoin being flipped by a better project that is also true to the core but does not have the scalability problems of Bitcoin and privacy issues
.6 Regulations that will make mining unprofitable
.7 Miners switching to AI training due to better profitablitiy, making network hashrate too low to secure against bad actors
.8 ....I could continue whole day, and every scenario is pretty real.
It takes only one of this scenarios for the price to plummet and most probably, to never recover.
The truth is, Bitcoin is not making a world better, no one would notice if it dropped dead.
As of today it's only a surveillance coin that makes more problems than it solves and people are cheering it because they dream to become rich but the tech is...
obsolete.
/Over&Out.