If people use bitcoin in many ways, I prefer to use bitcoin as an investment and not use it to buy things in online or offline stores.
I still use fiat for everyday life and only keep my bitcoins for long term investment purposes, so there is no desire to use bitcoins in real life yet.
I don't think you need to limit yourself in that way. Depending on when you got your coins and at what price, it might be worth considering buying something with them when BTC reaches a price you are happy with. Sometimes seeing and holding a physical item is good motivation and incentive because it shows that bitcoin has a real value. It doesn't matter what it is. If the purchasing power of your coins are much higher now than when you got them, you can get a new phone, a watch, a new computer, a house, a car...
it seems that in every country it will be different because there are governments that allow btc to be used as legal tender and some do not, in my country the government does not allow people to make btc as a means of payment and only allows btc to be used as an investment asset only.
Who cares what they allow or don't allow. It's between you and the buyer/seller. If I have goods you are interested in and willing to take BTC for them, your government's opinion on our deal is irrelevant.
When you only live on Bitcoin it will make life easier to live in, where you do not need a bank account...
We don't live in such a world. Even in the example with the YouTuber in the OP, we can see there are various hurdles he has to bypass and hasn't succeeded to live solely on cryptocurrencies.
