I'm not necessarily disagreeing with you, but "it's been working just fine for decades" is not a good reason to not change something. In fact, most things would

I'm not necessarily disagreeing with you, but "it's been working just fine for decades" is not a good reason to not change something. In fact, most things would never improve or change at all since most people are terrible at determining what "works just fine" is until they see "works really well".