Dave.

Perhaps it’s time to start researching alternative materials.

Plenty of metals floating around in space. Just need to go and get them.

Only need to capture one decent sized metalliferous asteroid from a near earth orbit and we’d be set for a century or two.

“Why do people do X, when in my opinion if you disregard the two top reasons for doing X, it’s pointless? Prove to me that it would be better!?”