It would be very hard to do so, to live on BTC you'll have 2 main conditions
- You'll need a decent sum of BTC to be able to pay for everything or a source of income that pays you in crypto-currencies.
- You will also need to be able to find stores for food/water, transport, recreation activities, and real estate options that are able to be payable in BTC, or at least accept gift cards (which are usually able to be bought for with BTC).
Right now, this very hard to do, unless you live in a country with fairly high adoption rates (eg, Singapore).
Your first point is obvious.
I myself can say you also use bitcoin every day, but use it by trading using bitcoin.
Because in my own country still has not legalized the use of legal bitcoin as a transaction tool that can be used.
Therefore my way to participate in using bitcoin is by trading in bitcoin trading and also I use bitcoin as payment when I'm gambling
Many stores are not still aware that they can accept crypto in buying their items, in my country we can buy in stores but I prefer to not use it in buying, but there were times I used it in paying bills, as much as possible I aim to hold it until the supply reach that can create hype in demand.
There are only a few stores in my country that accept Bitcoin as a payment hence, just to use this currency I need to convert it first in our local currency to spend it. Even so, just like you, I try not to spend my Bitcoin as much as possible, perhaps I would consider spending if the bull market comes. Spending Bitcoin to buy what you desire is not bad at all because sometimes you need to treat yourself. As a matter of fact, you earn Bitcoin because you want to achieve something, you want to obtain something so don't hesitate to spend your earnings and enjoy it.
Yea you may as well spend it instead of fiat. When people say they don't want to spend their bitcoin it makes no sense. Things will get better as adoption happens and we will use crypto to fiat conversions less and less until crypto becomes a viable and supported payment option alongside the current ones we have right now.