Well, all I was Saying is that I don't see it as a negative. If there is an OP weapon/talent/build,that's good for those who want to use it. I wanted to use it and I did, because I didn't view it's effects as negative. For those who view an Overpowered weapon/ability/build as negative, then there's no need to use it. Quite literally, despite the optim path bit, you lose any right to complain when you willingly use a tactic in game for your own benifit.
Again, an answer that fails to acknowledge a difficulty slider option. I've explained a couple times now why it actually does matter when a weapon, tactic or any other aspect of the game is out of balance. I'll go through it one more time, and pray to the Old Gods and the New that it's not completely ignored (again).
First you have to be familiar with two terms:
Cognitive Dissonance is being thrown around in the gaming lexicon a lot lately, as players are becoming more and more concerned with an immersive experience. If you're unfamiliar with the term, Cognitive Dissonance is basically the mental stress placed on an individual by holding two (or more) contradictory beliefs, values or thoughts at the same time.
How this relates to the argument at hand, comes in the form of the phenomena known as "Metagaming" .
From Wikipedia: Metagaming is a broad term usually used to define any strategy, action or method used in a game which transcends a prescribed ruleset, uses external factors to affect the game, or goes beyond the supposed limits or environment set by the game. Another definition refers to the game universe outside of the game itself.
In the case of Metagaming around OP tactics, weapons or entire mechanics, you create a cognitive dissonance because you're forced into a contradiction. That contradiction being Opting out of objectively superior gear for the sake of challenging fun, when the progression system of the game is a huge part of your fun.
This is the same reason I hate Skyrim's Crafting system. The infamous "Restoration Loop" Exploit is okay, because you're not forced to go out of your way to avoid it, you must go out of your to abuse it. But the regular crafting breaks the game all the same (And negates the entire looting mechanic) which you must specifically try to avoid.
I generally don't like long posts, but I feel the need to speak in great detail on this matter. I'm not trying to convince anyone to not like being OP, I'm just trying to show that there's very specific design reasons why poor balance is a problem in single player games.