This sounds like so much collective thinking to me. You will make your PC look like what Microsoft wants it to look like. You will assimilate into the Borg.
Why should I change my taste and style to accommodate a look that's designed for spoiled kids and "hip" grandmas. If the capability for a look-and-feel is there, let users decide for themselves if they want to use it.
It's my computer, not Microsoft's. My HOA doesn't come into my home and tell me what color to paint my walls and what carpet to install (as much as I'm sure they'd love to!). MS shouldn't tell me what my computer should look like either.
Also, the argument that the Aero theme is a performance hit is lame. The degradation is infinitesimal and not noticeable in the least, even for laptop users. I even heard people argue that we need to remove Aero to save electricity. Seriously? I'm surprised no one's mentioned global warming and that we need to get rid of it to "save the polar bears". (shhhh! Don't say that too loud!).
Bottom line. Aero glass rocks! The "new" interface looks like Windows 3.1 to me.