An absolute ton. I have a bad habit of saving just outside the final boss/dungeon/encounter/sequence and never going back to finish it.
Most recently, I've done this with Yakuza: Like a Dragon. I think it's still installed because "I swear I'll load it and finish it soon". But, as examples, I did this as a child with Breath of Fire 2 and as a teenager with FF7.
I think there's something about realizing I have to break off of the main story to do all the side content I want to experience that leads to a kind of weird play paralysis. Once I'm that deep into the game, the magic of the world has worn off and I just want to see how the story ends, but I feel like if I don't step back and do everything else there is to do, I'm "missing out". So I procrastinate, just a little bit, and then something new and shiny catches my eye.