This probably won't make me popular, especially with those who are convinced that there is a massive European conspiracy to take over Britain. I think we should have gone completely metric when the system was first introduced into public usage. Yes, I know, it would mean no more pints of beer/milk or miles per hour. (Although I buy 500ml bottles of beer to drink at home and my petrol/diesel for the car in litres with no apparent ill-effects)
It's just confusing. The flour and sugar comes in grammes, but the recipe is in ounces. In Australia they took the hard decision that it would all change in one go. Here we are bringing up another generation of children who talk about people being 5'9" (instead of just under 175cm).
This was prompted by a recent query about road signs. On the radio one pro-metric person was in favour of more metrication, meanwhile the UKIP person was predictably sceptical, alleging creeping Europeanisation. Although, to be fair, they both agreed that a proper debate about a once and for all switch-over would be better than this rather unsatisfactory jumble of imperial measures and metric, with its "metric martyrs".
A hard decision was taken to go over to decimal currency, and the same set of arguments circulated then - won't be the same, can't understand it, we'll be ripped off, etc. Yet who now could quickly add 17.5% to £2 11s & 6d?* In the same way, if the brave decision had been made years ago, we would all be used to it by now, and not worrying about how many stone we weigh.
Just off to make 250ml of coffee
* That's 2 pounds, 11 shillings and 6 [old] pence
£2 11s & 6d = (2*240) + (11*12) + 6 = 618 old pence. 17.5% of 618 = 108.15 old pence.
Total = 726.15 old pence = (3*240) * 6 [we'll ignore the fraction of a penny] = £3 0s 6d