This is one of those funny things. Debuggers are amazingly useful as a print statement machine. You get prints for every line. You can stop and think as the program executes. But at the same time, most bugs can be found with, as said, prints and thought.

I generally reach for a debugger when code is complex enough that I don't know where to begin putting my prints. But often end up reducing to prints and other output when I get close to the issue.

That said. For buggy code, where the bug appears seldomly, conditional breakpoints are a lifesaver.