So you've accumulated a massive bitcoin investing fortune, but you are going to die soon and haven't been able to enjoy it. You have no children. How can you pass on your bitcoins to future self? First you need to figure out how to target a message and have it noticed by the future self. Then you need to figure out how to securely transmit the key in a way that nobody else but your future self will be able to use. Or you need to entice your future self to download a bitcoin wallet - then somehow have the current wallet detect that the new you has created a bitcoin wallet and send the bitcoins there. Come on bitcoin. Want to talk about programmable money and the money of the future? Let's see you do this and then I'll be impressed. It would be funny if I could put this in a JIRA ticket as a bug.
To be honest I think youre posing a very paradoxical question. I think that why would you be sending a fortune to yourself when you are going to die. Why would we be putting it to purselves when we can be able to put it into ourselves or to parts of our family. We are already dead and I would rather that the future generations can put it into good use