Somewhat ironically, I find the issue similar to what we experience in real life as well: We might moan and kvetch about how unfair the system is, or how much power/money So-and-So has because of his position, but, hey, we choose to do what we do.
In D&D, there's even less of a reason to complain -- You think a wizard is powerful? So play a wizard.
In D&D, there's even less of a reason to complain -- You think a wizard is powerful? So play a wizard.