... go on about the fact that they had no central heating and no washing-machine, and "we certainly didn't have a car until we were 35, and do you know, a LOT of people weren't on the PHONE" etc, ad nauseam, ad infinitum, yakka yakka yakka.
I think it's to make us feel guilty that DW and I both work, and a hint that if we were prepared to give up these 'luxuries' we could live on one income. Oh, ho ho bleeding ho. Merry Christmas.