I'm a Toolmaker by trade and do work for the local and US markets which means I have to know both systems of measurement to a high degree of accuracy. So for me either system is no problem to use.
This same metric/imperial discussion came up at work tonight. The conclusion was that the imperial system is awkward and outdated and should be banned from use worldwide! I could go on for ever about why I dislike the imperial system, but I won't
The biggest flaw in the metric system is the use of the centimetre. It's only used in measuring TV's (plasma tv's seem to be measured in inches though
) and when making clothes, but it's taught in schools as being a standard unit of measurement. It's much easier to work in microns, mm, m, km.