I go with $280,000. Rationale: I think the world will have at least one big independent store of value next to the other big currencies like the Dollar, the Eu

I go with $280,000. Rationale: I think the world will have at least one big independent store of value next to the other big currencies like the Dollar, the Euro, the Yuan and Gold. At the moment, Bitcoin is leading by a long shot. As it is the only independent (decentralized) store of value so far. The "old school" stores of value all have a similar market cap. Somewhere in the order of 8 trillion each. To reach that, the Bitcoin price would have to increase 10 fold. But it could also be that Bitcoin's use will dwindle like the use of FTP dwindled in favor of other prototols. I give that a 50% chance. So I cut that value in half => A five fold increase of todays price of ~ $40000. That is an annualized ROI of 17.5%. Let's add 4% inflation to that => 21.5% annualized ROI. That would be a 7 fold increase. $40000x7=$280000. To define "price of Bitcoin" let me add that Bitcoin might very well evolve or fork into something that is called differently. My cryteria is that if you hold 1 Bitcoin today and do not touch it for 10 years, your buying power will be $280,000.