I’ve actually done this a a lot for work needing to work out operating weights of mechanical equipment and checking existing structures for capacity etc. American equipment with all imperial info and Canadian building design. It’s easy to convert, but still annoying.
Yes, and I’d also argue that we don’t “need” it. It’s certainly a good tool you can build to suit your needs/wants like news, funny stuff, etc, but we can also go without. The big difference between social media really is whether you are the product or not.