Sometimes it's just good to play a game just to purely kill time, and that's what Flower allowed me to do. There's no one to kill, no missions to complete, and no cluttered HUD to observe - just going with the flow and riding the wind.
And the game wasn't really begging to be finished. I just found myself idle between games, and thought that I haven't played it in a while. And before I knew it, it's finished.
Flower's calming atmosphere and music are enough for me to return to it again when I need a break from any big-name games. Or if I want some nice and pleasant background on my TV.