Yeah, if you break down inches, we get to sixteenths of an inch. But that's rare. Whereas with metric, everything is so bloody anal: 1.62 meters tall. 38.4 centigrade. 35 kilometers per hour.

Uh... 5'6. OK, so I'm off a quarter inch. Big deal.
101. Ok, yeah, it might really be 101.3, but only digital thermometers get that precise. 25mph... I don't have a good point on that one.

But unless you're in a scientific field (or maybe some construction jobs), it's too uptight. real life is good enough with rough estimates.