It is possible to live on $0 income/saving indefinitely, assuming you live in a developed country with a welfare system (I wouldn't personally want to).

Not really that's about the level where you don't have to think to much at say the £1,000,000 - yes I would not really have to work - but buying a house would easily take 50% - 70% of that.

And I could spend 10% of the 1 million on just maxing out my unused pension allowance for the last three years, and probably I should do the same for my sisters.