when should you think about event sourcing?

Hey everyone, I've been wrestling with state management in a complex domain lately, and event sourcing keeps popping up. It seems like a powerful pattern for auditing and rebuilding state, but it also brings its own set of challenges. For those who've actually implemented it, when did it feel like the right time to pull the trigger? Were there specific problems it solved really well, or was it more of a general architectural decision? I'm curious about the trade-offs you found most significant.