Using OSX can be more intuitive at times but it is visually inconsistent. It may have been through various aesthetic revisions but it can feel old. I think Microsoft has done a better job of enforcing a standard look for applications on the desktop and the Windows design language is now generally more modern.
In the early 2000s when I jumped from Windows to the Mac I felt this very same way … except I was describing the Mac as generally more modern and Windows as visually inconsistent. It is interesting to see a new Mac user’s perspective.
Even today, when I use a Windows 10 computer and click down a few screens I find it terribly inconsistent. I see stuff that looks like Windows 98 to my eyes sometimes. I don’t see that in macOS very often – if at all. But, I can see Walker’s perspective. macOS does feel a little long in the tooth to me too. Not compared to Windows 10 but just that the overall design language is stale. Perhaps High Sierra will spruce things up enough to keep it fresh.
