I kind of miss multi-disc games because they were almost like having two or three or four games in one, with a climactic event at the end of each disc. Like, in a lot of games, the end of disc 1 could be the end of the entire game, but the developers wanted to have more story so there's a plot twist or something similar and it turns out the bad guy you just killed was actually only trying to protect the world from an even worse guy or something