I don't think bitcoin needs to become the mainstream of world money because bitcoin is still not effective for that. In addition, even though Bitcoin is not the world's main currency, this will not affect its value. We can see that gold used to be gold as currency, now it no longer exists but the value of gold is not affected even though it is no longer currency, gold always has its own value because of the trust and rarity of gold. This applies to bitcoins
Bitcoin is still quite risky with high price volatility, if it is used as the world's main cash flow it will not be good.
Bitcoin is still the most sought-after digital currency and is becoming optional for payments other than Fiat in countries that fully accept Bitcoin.
Bitcoin also has a scarcity and Bitcoin supply is only 21 Million BTC available,
but not all of them are in circulation and some are buried in abandoned wallets.
But of course it is different from gold because Bitcoin does not have a physical form.
Gold as a Safe Haven Asset is quite popular, but Bitcoin cannot be used as a Safe Haven Asset because of its rapid fluctuations.
The reality is that, why should people be buying water bottles with Bitcoin? If we consider the practicality of it all, why should we choose Bitcoin as payment for our cup of coffee? Sometimes I wonder whether those videos of children buying a piece of banana or a glass of lemonade using Bitcoin is the best way to promote Bitcoin. Cold cash would be best. Perhaps Bitcoin's whitepaper is where the point is, that it is an electronic cash, that it is for online payments, for eCommerce purposes.
Yes, and in the modern era like today, Online transactions are needed, Bitcoin is a good option for Online payments and ecommerce.
But Bitcoin's current problem is scalability, which has recently been paralyzed by an increasingly dense buildup of transactions and this has brought traffic jams with fees rising dramatically.
The Lightning network could be a solution, but there are those who oppose it and development is also lacking.