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.
Normal belts have a limited adjustability and can tear very rapidly.
Depends on what kind you get. The belts you are talking about are made of two thin strips of leather sewn together with a cheap backing material. A solid leather belt will last decades and you can always punch more holes in it if you lose or gain weight.
I got one of these years ago and its held up really well. I work construction and have skinny hips and this does great double duty as a tool belt.