You'll never understand it, starkers.
Ah, but I do understand it! Win 8 is a rock solid OS that's been 'enhanced' by 3rd party apps. I have the Stardock apps installed, and I use them occasionally, but the fact is that I can use/navigate Win 8 without difficulty and not use them. It's not that hard.
Yes, I like Decor8 as it brightens up the look of Metro, and I like ModernMix because I can run my most used apps on the desktop and multi-task them when required, and Start8 allows me to boot directly into the desktop, which is handy, but once I'm there I use Win 8 much as I did Win 7, by using quick launch, desktop shortcuts and what I've pinned to the taskbar. The Start Menu Start8 provides is handy when I have a few things open on the desktop and I want/need to open something else, but for the most part I have learnt to use Win 8 as it comes out of the box. It's no that hard.
It's not 'sheep' when everyone actually realises the flaws themselves.
I don't see flaws, as you call them. I see new ways of doing things, and once you get used to them they're not that hard to do.
Oh, look at that, I said Win 8 isn't hard to use 3 times, so it must be true.