so, when should you actually think about doing Chaos Engineering?

hey folks, ive been thinkin a lot about how we proactively identify weaknesses in our systems. we often do load testing and security audits, but im curious about Chaos Engineering. for those of you who practice it, when did you decide it was the right time to start? what kind of systems or maturity level do you think makes it a worthwhile investment? lookin forward to hearin your experiences and insights!