Occasionally I wonder what I'd have done with all that money, but very rarely. I don't miss the billions. The $1M (plus or minus) that I got out of it was more than enough to count myself deeply fortunate. Nobody "earns" that much money - I just got lucky.
I prefer the path I took - a great life, much happiness, low stress, and for the last 20 years, the fun and games of building one of the most successful libre software projects around.