Debuggers aren't quite as useful with C++ indeed. But that's a good reason to use C++ less. I diagnose issues drastically faster with a debugger all the time. Often I'll write a unit test that reveals a bug, but just looking at the code doesn't quite reveal where the bug is. But sticking a few breakpoints in the right places and examining the data structures directly makes it really obvious.
Eventually, I learned to write code that was so obviously correct and had such good error messages that I haven’t needed to use a debugger in a long time.
Nobody needs to use a debugger, just like nobody needs to use most tools. They're just very helpful when they work correctly and are used correctly.
