It's all about trade off. Building a database which is never gonna crash might be possible but at what cost? Can you name any single real world system archived

It's all about trade off. Building a database which is never gonna crash might be possible but at what cost? Can you name any single real world system archived that? Also, there can be a regression. More tests? Sure but again, at what cost? While we are trying to get there, having a crash proof architecture is also a very practical approach.