As I've already heard that mouse's brain chemistry is close to ours, is there really much correlation in offspring genesis too?

I may be too skeptical, but I would remain calm even if I was trying to get my lady pregnant and eating junk-food.

Then you are using it wrong. I haven't seen Metro for weeks. I boot to desktop, I have normal start button and everything else works like in Win 7. Except it does few more things. it changes the cursor when topmost on the screen, shows additional toolbar on right, but hey: no one is forcing you to click in it when it shows and it doesn't get in the way with neither closing button or start bar icons and can even be turned off. So, investigate on how to use your OS. It is your tool. You are not it's toy. :)

I like it's UI. Except for that missing Start button. got great app for that and I'm fine. And Office is fine too. Really nice looking.

I may be missing something, but I don't know why should people (and I) care? Is there any threat rising for anyone already?

What the hell is wrong with Google now? I happened to REALLY like Google since I got net access, but in last months, Google seem to me like every other giant company abusing his position on the market. What happened to Google's motto, "Don't be evil?"

Try to be assertive a bit. :) FF 3.6 has been sticking i.e. with Ubuntu. The concept of Linux is using stable, time-proven software. When you want to guarantee stable browser for the whole environment (i.e. on university or in company), you will stick with something you know that works fine. You won't be looking forward for quick-and-in-hurry-developed new versions. Especially when they come with no visible enhancements or new features – then you start worrying about bugs introduced into the program with update. Personally I don't have reasons to delay upgrade much (except for incompatible addons), but if I should make a decision for a whole bunch of computers, I would stick with 3.6 too. ;)