To be honest I'm fairly apt with either format and can quickly convert between the two, but I'm very much used to using scientific measurements (much of it is in metric if not it's own format).
The metric system is also more realistic in a sense it's based on actual conditions. e.g. water has a desnity of 1 so 1ton of water is 1m^3. It makes things easier to visualise on that principle. That's one example of a few.
Also try converting 10cm^3 to m^3. I can do that in my head you simply divide by a million. change 10inchs^3 to feet^3 and you have to divide by 12^3 which is not such an easy sum personally.
It all depends on what you are used to and what you deal with daily and for me my prefered choice is metric, though i could put up with imperial for most things too.