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[cheekychap]

If bitcoin went to zero I would buy an     amount of coins.

[minerpumpkin]

It is definitely possible, but highly unlikely if you ask me! There'll always be people willing to pay a very small amount of money on the off chance that something will be worth more at some point in the future, may it just be a hardcore Bitcoin enthusiast. But if certain one-way mathematical functions go bust, we may see prices very close to $0 still!

[thejaytiesto]

If bitcoin went to zero I would buy an     amount of coins.

It's possible that it goes to 0 and it's possible that you end up owning the entire Bitcoin supply, but realistically it isn't possible. It would mean there are 0 people in the world willing to buy your coins, then the price would be 0.

[jaberwock]

only to BTC reach 0 is if for some reason send and receive bitcoins turns out to be impossible.

Like BTC price was 0 in Bitstamp for few days

[ElectricMucus]

Realistically it can go to zero if it becomes impossible to do transactions. And that becomes plausible if mining difficulty can not adjust after an avalanche effect of miner dropout.
It has been demonstrated with Namecoin.

[Q7]

It's so easy to talk with bitcoin at 500.

If Bitcoin went under 100 usds, there would be so much panic that most people would dump them like hot potatoes without looking to the price at which they were selling.

yeah there would be so much panic, but not what panic you are talking about but PANIC BUY, price won't go under 100 ever, many will buy long before that

For sure I'll place a huge buy order. Already allocated funds on standby. And people who bought right now at 220 have no reason to panic sell when it goes to 100. What do they have to lose anyway if continue to hold on to it