Sunnyjohn,
Like the author of the verbiage you posted I too have been using Apple products since before the Mac came along, my first being an Apple II.
However, unlike said author of verbiage I think Mavericks is the bees-knees, so to speak, and think it the best upgrade they've done to OS X since its inception.
Sure, there are some "missing" features but in general I think Mavericks is a vast improvement in the development of OS X.
Kudos to all at Apple involved in the release of Mavericks.