Debugging with print has one feature that debuggers will never match. You can send the binary or code with print/log statements to someone else who is experiencing the problem and get them to run it.

Often I have to debug bugs I can't reproduce. If method 1 - staring at the code - doesn't work, then it's add print/log statements and send it to the user to test. Repeat until you can reproduce the bug yourself or you fixed it.