Why was Henry v111 so mean?

One reason could have been his failing health, he injured his leg in a jousting accident in 1536, this never healed and stopped him exercising, he put on so much weight he could not walk and was carried every where he needed to go, he was infected with nasty pus-filled boils, and it's believed he suffered from gout which is extremely painful, all this would have made him a very grumpy old man.