I'm not sure how you see that, nothing in this game seems to say that life is meaningless, unless you feel that way because you don't get to keep everything you want but that's just life, isn't it. Animals never think about this stuff, they just live.
I'm sorry if an existential crisis really was what killed your son, but not everyone will find a lack of bigger meaning in life a reason to end it.
Hope you won't find what I said rude.