I love punching doors
Why do you love punching doors?
I will feel much better when I punch inanimate objects
It makes sense that you want to have a release for your frustrations, however punching a door is not a good way to do it. It would make more sense to attempt to talk it out or engage in some sort of exercise to vent your frustration.
You can never understand what's going on in someone head.
That is certainly true, but you shouldn't keep taking things out on objects because it is very violent and it can hurt you as well. Don't you want to have a healthier way to get out your anger? How about trying a punching bag which is made for that?