I Agree, and I think DirectX 9 is good too, I used it before I started using OpenGL.
Though I hate it when Microsoft releases a newer version,
and says things like "Older versions are no longer supported".
And by "no longer supported", I think
they are going to start removing documentation.
Even though the newer stuff doesn't work on 80%+ of the (Windows) audience.
I am sure they could release patches (somehow) and make it work on Win7...
Yet they choose not to... Maybe some people do not use Windows 8, MS!
(As you know, Windows 8 is a small fraction of the user base)
I also think Windows 8 is a fail (stupid "live tiles").
It's like a phone OS, not a computer OS.