Even $100,000 would kill it. If 1 sat (or even 100 sat) == $1 then the fees would grind the system to a halt. The fees would be so high relative to the amount sent, that it wouldn't be worth it. From an investment perspective 1 sat==1$ is a nice round number. From a users perspective, only being able to buy things divisible by 1$ is crap.
Lol even till our generation gone 1sat=1$ wont happen because bitcoin need to first reach a hundred million value and that wont happen until the end of the world lol thats a total BS idea
The average person in the world can't afford 1 bitcoin. It is a big mental barrier that 1 "coin" is worth over ten thousand dollars since mbtc and other smaller denominations are yet to receive mass adoption. The fees are worrying but if that is someone's main concern there are many altcoins to choose from.
Absolutely mate,it is very impossible that every people in the world can even hold 1btc each and also impossible because bitcoin has limited volume