- Do you think all dormant wallet (long inactive wallets) are gone forever?
Of course not. It would be foolish to think that way.
- As we are not certain of Satoshi's return, should we be bothered about his dormant wallets?
I see no reason why.
- do you think lost Bitcoin can cause Bitcoin scarcity in the future?
Thats kind of obvious. If there is less of something, of course that means it is scarcer.
- From a total of 21million total supply, can you attempt a prediction guess of the total number of Bitcoin that would be in active wallets after all Bitcoin has been mined?
You mean in 100 or so years? Well, thats a long way off. Human civilization itself might be a whole different story by then. Predicting something so specific is impossible.