False dichotomy.

"All code has bugs" claim is true, but it doesn't mean you need debuggers in order to solve/fix the problems.

If your methods ARE small enough, and you have tests for OTHER cases, printing/console is actually faster (at least for me) than using a debugger. I have a JS debugger in firebug, and I rarely use it (for pure JS, not just CoffeeScript output).

That's your experience and anecdotal. Advocating against the use of a debugger when it's necessary (and it is necessary a lot especially with others' code) just shows you really do not understand program flow, let alone software development. I'm glad you only work on your own code and you should be too.

In your experience, it's necessary with others' code. In my experience, it's rarely necessary.

As long as you're glad with your false assumptions, I have nothing more to add.

So your code has no bugs? That's a first.