Many people have extra time or energy but don't use it for any world changing hobbies. Eliezi Yudkowski was really into thinking about nanotechnology before deciding that actually thinking about AGI was a much better use of his free time. Nate Suarez, likewise, describes pivoting to AI safety after a decade thinking about governance and institutions. For my part, AGI safety was the fifth exclamation marks in brackets, long term that is multi year, intense ambitious hobby of my life. And now it's my job. I'm reminded of the book quote, When you are older, you will learn that the first and foremost thing which any ordinary person does is nothing.