Correct - I've admittedly had a few beers.

Which might be obvious due to me debating the merits of the number 12 on the internet.

Well 12 is amazing, but arguably there are too many other negative aspects in the imperial system as a whole.

But 1/2 isn't a whole number either.

Base-10 absolutism rears its head again. The objection to 1/3 is that it has a non-terminating decimal expansion. This is not a problem if you're using base-anything-with-3-as-a-factor.

What about 1/5 instead? There's always going to be problems with some base, the point is that unit conversions are super easy with metric, and it's easier to teach to children.

As for temperature, 0 is really gold and 100 is really hot in pretty much every scale, that's just a very subjective way of describing things.