The value of low-level logging

All of the info in logs can be obtained through a debugger, if you can reproduce the problem. Low-level logging allows a devloper to debug a problem without the work of reproducing the problem - Q.A. or another developer can just send the debug log for review. When it is difficult to reproduce a problem, debug logs can be invaluable. Debug logs also give a wealth of information without having to choose that info beforehand. While debugging a developer may find that more information is needed and it can require re-running the test to get that information.