Being a child of the 60's (well just about), I have grown up with both imperial and metric. Here in the UK:-
My own weight is always in stones.
My distance is always in miles but when asked for directions it is always "100 metres down to the right".
When I am doing DIY I measure in cms and metres, understand feet and inches to a point but am hopeless at converting.
When cooking I can use both grammes and ounces but again, struggle to convert.
As a kid the temperature was always in fahrenheit but now I only understand celsius.
My car does x miles to the gallon but I have to buy my petrol in litres.
In a pub the beer comes in pints but the spirits come in ml.
You can still buy cheese and meat in pounds and ounces.
A newcorn child is always measured in pounds and ounces.
When buying carpet it is usually sold by the yard.
It is not helped by the way the UK works. No-one seems to have yet settled on which system to use and it could be generations until we are all finally talking in metric.
I guess what I'm trying to say is well done to all you guys who can pick and choose which standard to use, I wish I could.