Diamond = easily shatter

Obsidian = fragile

Vibranium = fiction

Really?

Let me reverse the question

Why do power cables need to be buried in non dense urban area?

Yes it will make it a bit ugly, but so what?. It’s not like it being ugly will do anything anyway. It’s not like being a bit ugly is a very annoying thing unlike when there a trash heap and it smells bad.

I think we should just keep it up there for sub-urban and rural areas, and invest the saved money on other things.

Also, im from developing country so my perspective is bit different for this topic.