I wonder if the value would ever fall to precisely zero. Mightn't they still have value as a novelty or collector's item? Like, "Hey, a Bitcoin! I remember those... sure, I'll buy one, just to say I have one." It's unfortunate that you couldn't mount it in a decorative frame, though.

One guy made physical coins for bitcoin:

(https://www.casascius.com/)

Indeed. My friend knows the man behind this. He owns another software company in Utah and gives his employees bonuses in BitCoin.

or http://www.coinedbits.com/

At some point it would probably be easier to mine one, if the value and interest drops low enough.

That's backwards. As the value approaches zero, the relative cost of mining grows not shrinks.

That's true, but as value drops, there is less incentive to mine bitcoin so there'll be a lot less mining going on(not cost-effective with respect to the cost of electricity).

Unless we reach the mining gives you 0BTC limit.

It will never fall to zero, I'll personally buy every last one of them at $0.0001 each.

It would not make sense to buy EVERY one of them, as then you're guaranteeing they won't have value to anyone else.

Once you own 50% can't you create fake transactions to transfer the rest of the BTC to yourself?

No you need 50% of the mining capacity, not the bitcoins

Perhaps he sees minimal value in being the only person that has any.

I don't care, I'll buy them all. I'd be the sole owner of a piece of internet history.