Quote from: BurtW on September 18, 2013, 02:54:14 AM

The final 0.00000001 BTC will be mined on March 2, 2138.

You can hold me to that. If it does not happen on that exact date ~~look~~ dig me up and I will give you $1000 worth of BTC. Of course that will be exactly 0.00001 BTC on that date. You can hold me to that also.

Burtw is essentially right. Most (98%) of the "complete" bitcoins will be mined by 2050. So by 2140 there will essentially only be a satoshi or two. As the block rewards keep getting cut in half, the last fifty years you are slicing fractions of a bitcoin. This argument has been discussed several times, but this thread link has some charts which may put it more into perspective for some members:

https://bitcointalk.org/index.php?topic=235926.0