I'm 78, so older than Mick above, and I much prefer metric. Indeed, I find metric linear measurements much more understandable than imperial. Capacity measurements & weights are someway behing linear measurements, but slowly I'm getting there, and I don't want to go back. Indeed, the whole concept of imperial I find to be a recipe for disaster. Think pennies, shillings, pounds, what a rotten system requiring an in depth knowledge of the 12 times tables and the 20 times table. 100p to the pound is so much easier. Similarly, ounces/pounds/stones/hundredweights/ton's etc. requiring a knowledge of 16's, 14's, etc.
So, as far as I am concerned, although brought up as an imperial child, and am to an extent struggling with the visualization of the various metric quantities, I am slowly becoming au fait with it, indeed in some instances I already do think metric in preference to imperial.
It will be a bad day if we have to revert to imperial.
Peter G. Shaw