In short, no. I don't want to play in games which are strictly balanced nor do I run them. Do I want a chance to run away, sure. Do I vary the stakes and difficulty? Of course. Can the PCs kill the dragon in a stand up fight just because they found out where its lair is? That's puerile nonsense. Or at least it is at my table. How will I control the tension in the room, give my players a sense of achievement, of excitement, if they know everything is balanced for them? And if one player is overshadowing the others and making it less fun then we need to talk about that and explore it. But it is far from a given that everyone wants the same thing. For example, there is a RuneQuest campaign on you tube which has a party of a couple of really tough fighters, a powerful shaman and a temple dancer for the underworld God who couldn't contribute to the fights but made sure all the dead enemies were given the proper send off to the afterworld when the others killed them. Nothing balanced about that, but lots of fun. Who am I to tell them how to play?