Talk:Ken Kaneki/@comment-121.96.57.139-20160205130145/@comment-25047329-20160205201131

I feel like it's more "great power comes with a great price".

TG takes place in a very dog-eat-dog world where the strongest survive. However,  those who become strong or are on the road to it often endure suffering and loss. Kaneki became strong after his ordeal with Yamori, but cannibalism and isolating himself from his loved ones further deteriorated his mental health to the point that he's suicidal.

Urie underwent the Quinx surgery and pushed himself further than recommended and is now the top of his squad, but over exerting himself threatens his mental stability and the ramifications of having a ghoul organ stuffed in your looks like it's starting to take hold.

Ayato hated humans and his father's philosophy, but wanted to protect his sister, so joined a gang to get stronger. He became an executive in one of Japan's most notorious gangs, but now they have too much power and have gone way past the line. Even he's been hinted at to be disgusted with Aogiri's human experimentation and the over all treatment of the members, but his membership is until death.

Etc, etc

Imo, a lot of it revolves around the repercussions of recklessly trying to gain power. A good chunk of the characters who are strong aren't normally in a good place.