The problem with keeping money in a bank is that in the blink of a tiger's eye it will turn on you: what's yours becomes theirs, what was your sweat and labour and sold off portions of a lifetime becomes a stranger's.
We are nature. Our every tinkering is nature, our every biological striving. We are what we are, and the world is ours. We are its gods. Your only difficulty is your unwillingness to unleash your potential fully upon it.