There are people who collect old clay pipes from the bed of the River Thames, and while some were broken, many are as usable today as centuries ago. They were cheaper than disposable lighters in their day, a half dozen a penny. Keeping them clean is the challenge.
As for cobs, they get dirty and grungy and you must take care not to let the bottom soak up tars and break up. Modern Missouri Meerschaum pipes with a dowel plug help the later. Any Missouri Meerschsum that’s polished and filled with plaster helps you keep them looking nice. But in their heyday they too, sold by the half dozen.
I’m trying to remember if I’ve ever actually depleted a disposable lighter.
The danger is loss, not use.