The older I get the more aware I become of the risk that I can't possibly assume the ability to make a living the way I currently do will stay around indefinite

The older I get the more aware I become of the risk that I can't possibly assume the ability to make a living the way I currently do will stay around indefinitely. I could become disabled at any time, or the world or industry could change. If you look across different professions in different countries across different times, you see that a profession that is very lucrative in one time period often isn't anymore in a subsequent one, or in another nearby society. These things come and go. There was a time when becoming an airline pilot or factory worker were lucrative options in the USA. There are a lot of good reasons to guess that the good times will continue for the time being, but you're kidding yourself if you think it's a certainty.