> I am a parent and a happy one.) There is something so bleak about the quiet child hate in the modern world. To me, it implies on some level a lack of hope for a better future.

It is not. You are giving a wider scope to something very trivial, such as feeling upset by sudden and very high noises, and the annoyance of little kids running around unsupervised. There is no higher meaning here, just the need for education.