As an example: the end of portal 2 and the "ending" of portal 1. You can only experience that stuff for the first time once. If you aren't the player, your experience is cheapened. Your satisfaction for figuring out what to do in each of those moments is a powerful feeling that cannot be replicated by watching someone else do it. It's diet vs regular.

if you can't see a difference between figuring out what you're supposed to do in those 2 specific moments I'm referring to for yourself as the player and just watching someone else do it, then there's no hope for you to understand what I'm saying.