But who are you (or anyone for that matter) to decide that everyone should "grow" in areas X,Y,Z? I hate blanket statements like "We seem to be creating a society where everyone feels they have the right to not feeling stressed and uncomfortable".
For example - I hate the modern office workplace 9-5 in-office bullshit. I know exactly what I want. I don't need to "grow" any more in this area. Can I do 9-5 in an office? Yes - but I fucking hate it and no amount of growth will change that. Why should I be forced to come into an office, for a job I do better at home, because Bob from management needs to be around people? I say to this - fuck Bob, Bob can go shit bricks.
Another example - I am very comfortable with living without any social media, or a smart phone, or a Tv, all at the same time. But, you don't see me going around forcing people into this way of being, and then when they find it horrible/stressful/uncomfortable saying "well maybe we are creating a society where everyone feels they have the right to not feeling stressed and uncomfortable, fuck your tv"
Instead - We are creating a society of non-thinkers, conformists, average-results-for-all, and dumb opinions like "well, I can deal with it - why can't you? Are you lazy/introverted/mentally-handicapped?"
I think challenging yourself is great, FOR SHIT THAT MATTERS. And only you can dictate what matters, fuck Bob or anyone else that tries to impose "what matters" on you.
The problem is, your statement sounds generalised to "challenge yourself in everything". I don't care for that, I care about challenging myself in a select few things of my choosing, I am my own man. I forge my destiny, I plow my path where I want to, not where society or Bob tells me.
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And you know what the result will be for Bob and I?
Bob will not really grow as a person at all, his life will be all soft smoothed edges, not unique in any sense. Bob will be the same as everyone else with slight variations here and there, Bob will be boring, and at the end of Bobs life, on his deathbed he will say, "well, at least I didn't rock the boat!"
I, and others like me, will grow, in a unique sense, jagged edges, sharp incline and deep depressions. I will say when I die "I wish I leant even more into rocking the boat, capsizing it, just to see what would happen"