Sorry, I couldn't disagree more. Windows has always been a bit of a mess and Windows 10 is no better in that regard. MacOS is far more coherent. The command line experience is so bad on Windows in comparison to the Mac, Microsoft added the WSL Linux command line. It's not exactly seamless to use though. Dev tools like git are much nicer to use on a Mac. The built in apps like mail, calendar and notes are much nicer on MacOS. The iMessage integration is not available on Windows 10. I am unaware of a Windows equivalent to the keychain app. Home networking seems much easier on MacOS too.
Windows has two major advantages, games and much better hardware choices. The Pro version also has the built in ability to run Linux in a VM which is what I will do if I switch from a Mac.
Windows Credential Manager would be the similar function to keychain as it manages your Windows Credentials and Web Credentials, but I prefer LastPass and use it on my Macs and PC.
I prefer Windows Mail or Outlook to Apple Mail, and use Outlook on my Mac, iPhone, and PC, but personal preference.
Calander App isn't that great on either platform. Fantastical on my Macs, One Calendar on my PC.
OneNote better than Apple notes and use it on both platforms. But again everyone has their preferences.