I think it's just because everyone wants to be the 'bad ass' anime character that shits gold and pisses holy water, so they refuse to let them feel any sense of danger. And every hit they take was 'a part of the plan' or some shit. I don't care how strong a character is because it's easy to overload a character's kit. I like characters with limited abilities who can overcome an obstacle, on TOP of being a great character I can root for and find interest in. Some people just don't find the balance.