Bitcoin will be having close to zero value, if there are only two people to mine them. The more the users, that much higher will be the value. And I believe that one of the reasons why the exchange rate is going down, is due to the fact that fewer number of people are using Bitcoins, when compared to the situation which we had in 2013 and 2014.
comparing all price movements to a short 2 month period of winter 2013/2014 is pathetic..
the jump to $1000 was a fluke. it was moving too fast and was bound to burst. it was not natural price rise.
that said even if only 2 people were mining bitcoin.. it will continue. and lets imagine this was the case in 25 years from now (2040). where due to reward halving, each block would be handing out under 1btc per block..
which because those 2 people are fighting for dominance.. the hashrate will continue to rise, meaning equipment cost and electric will be high and so the cost to produce the block (less than 1btc) would not make 1btc=2c.. it would make it man dollars.
and even when/if there was only a couple people still mining. bitcoin would continue..
by this time no one will want to even swap bitcoin for FIAT. there will be shops open to buy groceries with bitcoin, car fuel etc.. after all there is more chance that a FIAT collapse would happen..
again the other reason btc wont =2c. is because a loaf of bread being $30, means that electric kwatt per hour wont be 20c, it would be $2. and as i explained the cost of competitive mining. and the many kwatts needed to hash.. the cost of making that under 1btc/block would be many dollars. not cents.
even if bitcoin stayed at a value of 150 loaves of bread for the next 25 years.. even by that alone will mean bitcoin would be worth thousands.. just to keep up with FIATS inflation.
just keep in mind the whole deflation nature of bitcoin vs FIATS inflation and you will see there is more chances that bitcoin value will rise, rather then fall, even if it doesnt move. the value will increase
no one will know what the natural price of bitcoin would be.. whether it be a few dollars or a few thousand dollars.. but one thing is for sure bitcoin will continue and it definitely wont be only a few cents.