Children don't care about the negative things happening in life
and do you know why?
Because they dont like at life with a duality glasses. No right-wrong, positive-negative. For children life is an experience.
If only adults could look at life that way...
Well the only way that could happen is if an adult will lose his ability to perceive things in dualities, which is not something I'd recommend but it's a free world and you gotta try everything once..
I do agree though that being able to see through the duality, especially when the duality of a scenario is in your favor and it'd be self-deprecating in a sense to dissolve that duality - that ability could have unbelievable benefits, but that's so different from what babies experience that I don't know if it even "counts"..