MacOS itself is fine but only runs on apple hardware which makes it a costly proposition of the bat as you're throwing away all your hardware and buying apple hardware, which pretty much will lock you in to their ecosystem.

Then there's apple hardware lockdown and their fast deprecation policy which breaks old but still working software and hardware. Apple dropped support for my 2008 macbook in 2012 because they didn't care to develop graphical drivers for it, which meant I was forced to swap it to Windows 10/linux to continue using it.

Because of that, realistic only Windows would be a viable option for me, which was also my main OS up until recently.

Other smaller OS like BSD or Haiku could be interesting, but lack of mainstream support would probably prove too much work and limiting for daily use.