> None of that has any relevance to whether a pint is more convenient than a litre. But one pint versus one litre doesn't have relevance to anything, does it?

> None of that has any relevance to whether a pint is more convenient than a litre. But one pint versus one litre doesn't have relevance to anything, does it? It seems you've heard the suggestion to adopt a sensible, integrated, and (much more) widely used measurement system -- and are choosing to argue against specific numbers / quantities of things. Originally you said 'a litre [of beer] is too big as you'll end up with a flat beer'. Metric doesn't mean you must sell, buy, or drink beer in round numbers.