I wonder if you could get into legal trouble if you start to re-distribute calc.exe from older Windows version, as a free download. Probably yes, but it would look so ridiculous if MS lawyers would go after a random person doing that.

cmd.exe and calc.exe from ReactOS can be used since ReactOS aims to be fully binary compatible. They look a bit bad though.

Or this is a good opportunity to use tools not built into the OS or write own replacements. It's a bit silly to have calc program dictated by the OS version.

Not him, but I would have stayed on 8.1 too if it weren't for processor support. The only annoying thing about it is the start menu, which i only use for maybe 10sec/month. It's faster than win7 and has a bunch of features I would miss, and compared to 10 it's not as bloated with non-win32 apps with less functionality for everything, tracking that you can turn off, and all the other win10 stuff you've heard already.

I forgot to update to 10 during the free period and I don't feel like paying $100 since windows 8 still works fine.