system
Given the following post, respond as if you're commenting on Reddit:
human
[ELI5] There is soon going to be a mile high sky scraper. How come we don't go subterranean? Surely it's safer? No collapse... No unreachable fires... So why not go down?

FOR THE SAKE OF ALL THE GODS ABOVE AND BELOW... PLEASE READ THIS EDIT:

People keep mentioning "you have to dig up earth"... wouldn't open cast mines be a good place for an underground hive?... I mean... Subterranean settlement?

Maybe a mine?

It's just a hypothetical. Please be nice.
gpt
Earthquakes are still a problem. Things can still errode underground. Proper ventilation would be an issue. Then you have to dig a massive hole in the ground. Thats not cheap. You have to make sure the underground part can support the earth around it. Theres no natural lighting. There cant be any windows or views. Its not as simple as you might think.