Our Industrial Revolution was built on the inch and the pound and the non-use of metric units has not impeded the modern economic and technological growth of the USA, and its ability to make rockets that have enabled Man to land on the Moon. But they cannot metricate everything, however much they might want to. We all live happily with an irrational annual calendar of 365 or 366 days, divided in the most irregular and non-metric of ways into months, weeks and days. Temperatures are relative, and Fahrenheit is user-friendly, has smaller degrees, avoiding the need for decimals in everyday life. The division of the circle into 360 degrees is far more convenient than division into powers of ten.
Metrication boils down to a desire for uniformity, with no deviations from the norm.
You can also see this trend in your television programmes, as they iron out the differences between nations and make local colour, ethnicity and culture give way to a world culture. All this when we are now beginning to enjoy, rather than to eliminate, cultural differences. Ethnicity, in North America, though not in Europe, is now fashionable. Our unique system of traditional weights and measures deserves to be nourished, not just for its practicality and usefulness, but also as part of our contribution to the world's cultural richness. Dozenal and binary divisions were also kept.