I don't just use the Internet. There is a polarisation here between (shall we say) people who are organised and people who are not. I know where my stuff is, in organised directories, but MS seems to assume that everyone is disorganised and needs to search. We organised people find that insulting and patronising.
The ability to create hierarchical file structures is still in Windows 8, however its a good point, I tend to work collaborative with lots of different people and finding something in someone else's file structure I find a real pain, hence would rather have a good search. Doesn't mean either of us are wrong, just different.
For your other points, I tend to use OSX for work and Windows 8 for play i.e. FSX, Electronics (IDE etc) so maybe that is why I don't mind metro as there is always a desktop to fall back on.
Different UI metaphor's are good though as what is good for one person may not be for another, is the up and coming generation going to be more familiar with how their smart phones work or a work desktop environment? What's important is the realisation that one size does not fit all.