Should you write a thank you letter to your boss after getting fired ?
No, walk away. Think of someone in your life that's actually done something for you. Then write it for them.
In my opinion, it is not advisable to write a thank you letter to your boss after being fired. This is because it will seem rude and inappropriate to do so. Therefore, it is right to just collect your belonging and leave the office.
Let me get this straight. You want to do "what?" "why?"
Yes, you should consider it because you may need a good reference and opinion. If they are called upon.
The relationship has been severed. Please leave with your dignity intact! Nomore contacts necessary!