1. A bad boss can be a walking textbook on behavioral psychology. Working with a bad boss is your golden chance to learn the "do's and don'ts" of management. In all probability you can learn more about people management working with a bad boss in six months time than working with a good boss for five years.
2. Bad bosses help you learn harsh realities of human nature and make you better prepared in life's countless encounters. You swim better when you learn swimming in a rough river or sea, rather than in a calm swimming pool.
3. Every growl, rude remark, goof up, threat, cover up, charm switching, etc., can be a good lesson that is going to pay rich dividends to you at a later stage. They help you become a better manager at a later stage, because you will now have a rich experience in the pitfalls of bad management. It helps you to instantly remember and avoid the wrong things when faced with similar or equivalent situations.
4. And bad bosses help you in many other ways if you study their lives carefully. For example, it will help you understand how and why many employees erupt like a volcano at home due to work related problems.
5. Worldwide many ordinary people have become great leaders because they were subject to various degrees of insults or extreme forms of harassment by someone. So, directly or indirectly, every great leader will have to thank their tormentors for their current greatness. Similarly it can also perhaps make you great someday.
This is more self-comforting. I prohibited myself to complain about the work situation until I do the most I can. And the goal is to implement all my projects to be proud when leaving for a better company or for my own business.