But others looking on frequently do feel so strongly that my children are well-behaved that they feel the need to approach me and tell me so, mears
And to present an opposite perspective - I can't think how many times I have sat with my children in a cafe or restaurant, all of us sitting eating, talking pleasantly and enjoying one another's company, while another family's children screech and gibber, running around, whining, knocking things over, snatching things from one another's plates, while their parents alternate between beseeching them to behave, slapping at them, threatening to smack them, shouting at them and generally behaving in just as disordered and physically undisciplined a manner as their offspring.
Your generalisation is bollocks, I'm afraid. Generalisations usually are.