Yeah the problem is there is no single investment that will happily grow 40% a year and reward you for doing nothing. At that rate of risk, expect any of a number of things to happen before Year 42:
- You get scammed/cheated
- Company goes bankrupt
- Fund goes bankrupt/fails
- The currency one invested in fails to keep up
- You need the money (life isn't perfect, and a few million
dollars at year 20 can solve a lot of problems)
- You stop being greedy and are happy with the cumulative returns