I am very nosy observant and notice SO many mums and dads just carry on their convo with barely a glance at their offspring, then they just slug off home.
Can understand not wanting to interrupt a convo, but an eye-meet, smile, hair ruffle, ANYTHING other than a quick glance and a grab of bookbag!
I'm not suggesting we all sob with relief when our precious child emerges from school, but come on, a bloody smile isn't too much to ask is it?