With feelings like those, you will likely feel quite at home here on Permies! Putting a noticeably angular metal roof on a round, natural material building doesn't work for me either. Also, metal roofs can make some buildings much hotter in the summer and colder if you have a "colder" time of year.
But the room doesn't FEEL angular. It feels like it's happy being round (alas, I now sound like a lune to all but the artists). Plus, it's the most common alternative to thatch here, and I have a slight aversion to doing what everyone else is doing.
They worship nothing. They say it's because nothing lasts forever. Like this tiny ad:
Get Paid to Build a Permaculture Paradise at Wheaton Labs!https://permies.com/wiki/178360/permaculture-projects/Paid-Build-Permaculture-Paradise-Wheaton