Important != superlative need. I mean, I know this is just rhetoric drivel, but I'm bored enough to reply. My post was clearly about a certain type of pain that the mind knows is a necessary path to achieving a stronger mind.

Also, about headaches and more generally physical pain that you know is only temporary and not a sign of radical bodily malfunction, I say yes: enduring a reasonable amount is important to develop a tolerance to it and willpower.

What I'm saying isn't new anyway, everybody knows some amount of struggle is needed to temper character and not fall to the most insidious poison of our times: constant comfort.