In the future I think that only having 1mBTC and the person could live their whole normal life and with luxuries, because I think that the price of BTC will be very high, in fact I like to watch a lot of videos that have to do with time travel already ´ Despite the fact that everything can have some fiction, some say that the currency of the future and the only one that is handled is the BTC, obviously this is at the discretion of each one to believe or not, but I think that how the behavior of BTC goes every time it will be higher.
When bitcoin has reached the level of adoption as a currency widely, it will reduce its price volatility and may not be as high as expected. So far the investment and trading interest has caused the price to continue growing until it hit ATH $69K a few months ago.
I don't think bitcoin will go any higher if in the future its adoption has taken place in different countries. When volatility is reduced then prices will probably be much more stable and this is also the case with speculation. If you find that my assumptions are wrong, then feel free to correct me. We know bitcoin is used more as a trading and investment asset than as a currency in real life, this has affected the demand and supply needed by traders to make a profit. Different things will be felt if bitcoin is dominated as a means of payment or currency.