These games got me through very difficult times. When life felt impossible, Dark Souls felt doable. It was punishing at times, but it needed to be like that because life is like that. It would just be a waste of time otherwise.
It taught me a bit about despair, and how to overcome it.
This might sound trite, but Miyazaki's games have literally been life changing to me, in multiple ways.
I think they're a rare set of games that will still be played and studied in 50 or 100 years.