With all due respect to every other reply, I here would like to differ with any of the outside opinion to this question.
The idea of financial security arise from our fear to lose out in life in the absence of money. Security of certain kind is needed, but it is totally on self how much is enough.
There was a very rich man who died with astonishing 3 billion dollars to his name. He died with unfulfilled desire to acquire more because he thought 10 billion dollars would justify his life.
I doubt if he had 10 billion dollar to his name, his hunger would have been 100.. .. ..
I do not doubt that we require certain amount, but an inception of the idea of financial freedom is absolutely dangerous and irrational.
It all comes with pure self satisfaction. Two years before I thought a value equivalent to my salary then was sufficient but today it is different. I guess it will change even next year. So ya.