Really? C'mon Jon - the only reason you can visualise a mile is because that's what you brought up with. I can work with both - primarily because running races tend to be measured in both (We have 5km, 10km, 10 mile, 13 mile etc) and I can visualise them just fine.
Again, the only reason people state their height in Feet and Inches is convention. I know I'm around 185cm tall and I weight about 90kg.
In fact, actually, I do nearly all my weights in metric because I can't fathom imperial at all.
Metric makes sense
:)EDITED: 11 Nov 2014 17:39 by PILOTDAN