Withdrawal symptoms! That’s what I’m suffering, and from a cause so trivial that I ought to be ashamed to confess it: the old-time, now reviled, wholly disposable plastic shopping bag seems at last truly doomed. With daily increasing generosity, both grocer and green-grocer press me to accept one of their new “re-usable” shopping bags. (Even one of Melbourne’s toniest law firms lately offered me such a bag, generously proportioned and proudly emblazoned with their distinguished name. Maybe it was a kindly warning of the sort of bag I should need, if ever I were to stagger through their front door…