Nostalgia is a wonderful state of mind but, almost by definition, it glorifies the past while ignoring things that were not so good. Many older New Zealanders are nostalgic for the 1970s. But 1973 saw 843 people die on the roads, the worst road toll on record. Of every 1,000 babies born in 1970, almost 17 died before their first birthday. More than a third of adults smoked. The top income tax rate was 60%, and inflation was about to slip its leash. Not everything has improved since then, of course.