“On a fine spring morning on May 1st, 2140 at 10:02 am [1] perhaps the last Bitcoin block will be mined. Just about all of us will be a memory, unless the singularity takes hold soon. Thus we may not witness this event” ... https://www.quora.com/Once-all-Bitcoins-are-mined-who-will-confirm-transactions-and-inform-the-rest-of-the-network-that-transactions-have-taken-place/answer/Brian-Roemmele?share=53e14bed&srid=Pi3 …
David, indeed. It will still be quite profitable even over 100 years from now... If.