Are the Rings Old?

One theory is that the rings are made with the planet. The other theories you say is that rings could be fairly new. Maybe they come from a cataclysmic event, like something comes in and smashes into a moon or breaks up a moon as it orbits Saturn. So these rings might be short lived events in that scenario. If you have a collision which creates a lot of mess and some of that mess is stable in the sort of ring zone, then you could have a long living ring. That's how I like to describe myself a stable mess.