Thoughts on: To backlog or not to backlog

For me, there are two lessons here. First, we should play games we actually enjoy, and not games where we feel some kind of obligation to play them. Second, it is okay to walk away from games when we feel we've gotten everything we wanted out of them. Is our experience less valid when we spend 50 hours in an open-world game having fun, but abandoning the game afterwards, versus someone who rushed through the story in 20 hours, just to finish it?