I’m finding this question difficult to answer and spin like I usually do. My thoughts are that sensitivity has correlates with creativity and is a valuable human trait. I was a sensitive child brought up by a parents who wanted me to be tough so my intuitive response is clouded by opposing forces. Part of me believes there are people who are so tough they would never break inside and consider killing themselves. My grandfather was one of those tough bastards. I don’t think they should make the world though. I think most people would become suicidal if massive adversity wrecked their life and made them suffer beyond their threshold of resilience. At the same time there are some people with such low resilience that they’re all but predestined to want to die at some point and this is caused by source of suffering which most people can bear without seriously contemplating suicide to escape the pain.
I could argue with a comparison between the lack of requirement for physical toughness as potentially analogous to a future society’s lack of requirement of mental toughness. After all, people today suffer very little physical pain. People now would be considered too weak by their ancestors in the past. I just don’t like the comparison between physicality and mentality which is at the root of the crime of psychiatry.
I think the best way to answer it is to state something which deserves more explanation than I’m going to bother with. The world should be made for the weak. Society should be constructed around the sensitive rather than resilient. A society built around the expectation that everyone can survive what the tough can survive is a failure. In this world those who are very sensitive will suffer in the extreme but the vast majority of the populous will also suffer. In a society built around the expectation of weakness the very sensitive types suffer much less and the majority suffer barely at all. Everyone benefits from less suffering.
In many ways this last answer resonates with my perspective on things like stupidly and intelligence. Intelligent people usually have much more success in life and are better of in general whereas the stupid loose out. Part of this is because life is unnecessarily complicated from consumer culture to the ever forward progress of technology. If it was designed around the needs of stupid people then everyone would benefit from a simpler life.
The needs of the few can be aligned with the needs of the many. If the aim was to prevent the excessive harms felt most by sensitive people then the masses are gifted with less suffering. Expecting toughness means there’ll be more pain felt by the masses. If modern life which is meant for the tough there is more cruelty but if it was made for the weak there’d be less.