I fantasize a lot, probably a lot of the same things most people.
1) How I would change the world if I was in charge, having everyone work together towards common goals, respecting nature and not destroying the planet, no more hunger etc. Removing capitalism which is a cancer to society.
2) What I would do if I had money. Helping strangers with hard lives, buying friends/family homes, opening a no kill animal shelter etc.
3) If I was the strongest most powerful being in the world, how I would build my own civilization and run it etc.
Things I could only ever imagine