That's just not an attitude children get unless they're ugly.
Lol dude come on, its these kinds of posts that get used to make us look like idiots, that's seriously the only thing that comes to mind for you
The child could have been sexually abused over years
The child could have been physically abused over years
The child could have "clinical depression" (whatever inhibits the neurological functions of the dopamine based pleasure system)
The child could have experienced poverty and got an early look of adult life (how life really works), comprehends what bills are and that they are a problem for their parents, knows what murder and violence is on a daily basis (lives in a bad area), etc, and that just makes their outlook on life pessimistic and nihilistic
I was not sexually or physically abused, and I wasn't really all that poor, but I was a very observant child, picked up on a lot, and there were times where even I were thinking - "what is the point of all of this, if there is a heaven would it not be better to just die now and go there".
I've always for the most part thought that the trial of living is pointless, ironically especially because of my religious upbringing, that's why religions often throw in the little addendum of "suicide = hell" into the rule set, because logically, if there is a better place waiting for you after death, one would take the shortest route to that destination.
There are various reasons that can lead to a child thinking that life is not worth living other than being a trucel. Smart and observant children are very likely to think about this based on my own experience, it always felt like all the children around me were behind me, the things I would want to talk about I'd quickly realize they cared nothing for it and did not consider it "fun" enough to discuss, they wanted to talk about spongebob and dora the explorer, shit I had no idea about at the time (too poor to get cable around then)
That same shit stretched into adult hood too, because I notice that when I speak to older men, we have more in common, and we speak about the same issues, but younger people my age are uninteresting to me, and they are uninterested in the topics I am. Sadly I'm even ahead of some of the older men, some were married and divorced and plan on getting married again (one I know of currently remarried).
As black pillers were always head of the curve, for some of us this started at a very young age, I always had a stark outlook on life, said shit that made a lot of the children around me give off a disturbed face.