Do you feel this way about everything? Like you shouldn't take an aspirin because you should feel the pain of your headache? You shouldn't wear shoes because you need to feel the pain of the rocks under your feet?
Why is this particular thing the bad thing?
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.