The funny thing is, in several years of using Go in production in what are certainly non-trivial applications, I was able to find any bug either through log-deb

The funny thing is, in several years of using Go in production in what are certainly non-trivial applications, I was able to find any bug either through log-debugging, often with the help of isolating code in unit tests, or through pprof, in particular the net/pprof integration. Just looking at my own experience, I never _needed_ an interactive debugger, or deemed it essential, but then, that's just one data point.