So the proposition that the ideal parents for any child are its biological parents is a statement with which we can all agree in the generality, but which does not apply, for one reason or another, in many particular circumstances. ↗
The whole idea of a stereotype is to simplify. Instead of going through the problem of all this great diversity - that it's this or maybe that - you have just one large statement; it is this. ↗
You compose because you want to somehow summarize in some permanent form your most basic feelings about being alive, to set down... some sort of permanent statement about the way it feels to live now, today. ↗