He was a young and confused king. He certainly wasn't at a suitable age. His suicide was caused by the loss of his mentor and the fact that he probably could't deal with the shame and loss of all these people dying. He did nothing wrong. If he was a little bit older and not influenced by that moron then people would have looked up to him.

The little **** banned trial by combat.

Influenced by the High Sparrow. This will change now that Cercei is Queen.

uwotmate

Tommen was such a nice, loving, trusting young man. He trusted to easily, and just like Eddard Stark and Jon Arryn before him, he was manipulated and didn't play the Game of Thrones. He was manipulated his entire life by Cersei and everyone around him.