Change for change sake is bollocks
The tiles were a shit slow way compared to the old start menu.
They wanted to have a USP for the phones and made a shit touch based interface and rammed it into desktops to get you use to it, even though for desktop touch tiles are totally shit.
It was a forced crap change for "marketing reasons" not good technical reasons.
if you want to be forced to use shit then fine, but fuck off trying to force it on the rest of us that are fucking sane.