You will need a lot of Bitcoins I think. The value will always so that is the problem. Sometimes you are poor and sometimes you are rich.
And that is not good. Then your life will depend on a currency and that is not good.
Very well said. That is why you really need a lot to retire. Maybe cash some for a safer method or invest it to get a good house or some lands that can be sold or rented. Some businesses in the real world would be great rather than waiting for the price of bitcoin to come up.