[unscaled]

This is equivalent to asking "Why the heck are you writing code with bugs?"

Sure, if we could write code without bugs, we wouldn't need to suppress panics. But since we do tend to write code bugs and some of them are bugs that can be detected by the runtime - we get panics.

If you hate panics, you can do better than Go and go for a language with a stronger type system, where you won't get nil pointer panics or interface conversion panics, but even an almost onerously-tyepesafe language like Haskell still panics on some bogus operations such as division by zero or trying to read the head of an empty list. Perhaps Idris really have no runtime errors but they are quite niche.