Fun is strange.
We can be having it when we least expect it, or sometimes we ignore it while imagining it at some point in the future.
I have a few vivid memories of coming home at the end of my shift downtown. Walking a slow path through total urban density. A constellation of light from a thousand skyscraper windows illuminating the empty streets. My own music mingled with an outpouring of patio ambiance. Most of the time my thoughts were of home. It was usually when I got there that I realized just how much fun I had getting there.