I recall someone at Apple saying that the upcoming changes would be polarizing, and I have to say, that ever since the announcement of iOS7, it's been interesting to see how truly polarizing the new interface has proven to be.
I personally am not a fan of the new "flatter" design. I recall when OSX was first presented by Steve, he showed us Aqua, and proclaimed that the interface would be so beautiful that we would want to lick it.
This new turn in design at Apple doesn't have that effect on me, rather, it makes me feel like the interface is less personal/personable. It seems trendy, and to be change-for-the-sake-of-change. I'm not sure it offers me anything beneficial as a user. In fact, I find the new trend of minimalism and flatness to be more boring and annoying to use.
I was certainly no fan of skeuomorphism. I've been using Mavericks for the past while, and am so happy to see the calendar app back to normal! But life isn't flat. Things have shades and depth, and then I go to use my iPhone with iOS7, and am presented with flat colors and boxes. I still find it usable (and many improvements have been made), but I don't feel like anything of value has been added by these
visual changes... I really am dreading the day when my entire desktop OS looks like that.