Elastic belts are free size and normally don’t tear at all. meaning they can last for life.
I am kind of surprised that they are not commonly recommended in the anti-consumption/ buy it for life communities. Despite the fact that replacing normal belts with them at scale would save the world shitload of resources that are spent on normal belts annually.
Side note: I don’t recommend wearing jeans or suit trousers on daily basis, as there is more durable options that can last for longer time.
Photo is for example, as this is a generic item.
Though leather belts stretch over time, the only belt I ever had that actually broke did so after more than a decade of heavy use when the metal buckle eventually gave in.
I have a textile hiking belt (Fjellräven) that I am not particularly happy with. It doesn’t really stay firm over time when walking for hours and hours, and adjusting it underneath the backpack is a pain. An elastic belt with a normal buckle would probably have been better.