I've worked in banking projects with no automated tests. You end up manually testing only what you think might break with new code. The stakeholders expectation

I've worked in banking projects with no automated tests. You end up manually testing only what you think might break with new code. The stakeholders expectation is that things might break once in a while as long as you can fix it. For me testing at its most basic level is kinda like insurance, you might live without it but it helps a lot when problems arise