Everybody is wrong, from the Mac supporters to the so called IT PC geeks.Thats a laugh in itself. In over thirty years in this business I've seen and heard it all. I WEAR the T-Shirt to prove it. 7 will gain a foot hold by being supplied on all new PC's sold from a certain date. Business will have the option of downgrading as they do now, home users will probably keep it. Linux users, and its a good operating system whatever the distro, could take it or leave it, delete is easy. Don't knock Linux if you don't know it. Ones mouth can easily become ones ass.
The point is. One uses what one needs to do the job. Would I go out a buy it. No. Would I use it if it came preinstalled. Yes, and that will be the case for many businesses and private home users alike.
I like many have only upgraded when needs arose. I only went to XP in the last year and only then because of increased memory demands by certain bought in S/W, 98 served me well, I used both NT and 2000 and downgraded back to 98. Do I need continued support for XP from MS. No. Why. It does the job as it is. Nothing and I mean nothing exists either now or coming that I can't do on it. If it ain't broken. Don't fix it. I use Office Prof 2000 in all our systems (all 3257 of them), did I need to upgrade to a new version, no, Why, was a new version faster, were my girls going to type faster, no, was data input going to be faster, no so why upgrade. IT Geeks like to play with new toys,they don't know what they are, but heah, they are pretty. The big question is, "are they needed", are IT departments needed? Really, the answer to that is No. The days of needing to "write programs" for the mainfarme using Cobol, Fortran, Pascal, Unix etc, etc are largely over for the individual business. No, a good maintenace guy or gal can hook up the network, maintain it efficiently, run whatever Ops systems are needed. Why do they need to test this and that, its been done, someone else is wearing the T-shirt.
7 will be a fact of life, like it or not, to use it or not, I'm not until I have no other choice and by then I will probably look more closely at Linux and open source. Anybody who says otherwise when the money is coming from some others pocket has got to be off this planet. Personally, I use (now) XP in the business, Linux at home. I'm using Firefox now, why, I use it at home, it runs good on XP. By the way. I fired my IT team a long, long time ago and saved a bundle.