I just can't bring myself to agree with you on this one John.. I find it odd that your having that many issues.. I'm curious, did you have this many problems with any of the ALPHA/BETA or RC builds?A factor contributing to the fact that the masses update their OS by buying a new computer is the fact that buying a new computer only costs a small bit more than buying a new (Microsoft) OS for their existing computer. (just wanted to make that point) Yes, new computer sales will account for the vast majority of Windows 7 sales, while the percentage of enthuiasts who build their systems or upgrade their "old" systems is very small.
As to MY opinion of "How good is Windows 7?", Windows 7 has a long way to go. I have Windows 7 RTM installed and activated and I am seeing ENTIRELY too much Vista characteristics. Iam experiencing approximately daily screen freezes requiring a reboot and loss of whatever website or document I was working on. On two occasions, I had to turn power off to the power supply to get the computer to reset and reboot. Libraries has helped very little in the train wreck that Vista Windows Explorer was/is. Generally too much Vista "look and feel" which is a subjective characteristic which some like and some do not like. (I totally do not like it) Many of the old familiar capabilities that we used and liked are now gone. Classic Start Menu and the ability to arrange icons in Windows Explorer folders are two that come to mind immediately.
While I do have Windows 7 RTM installed and activated (legally) I am not one of Windows 7's enthuiastic boosters. There has been far too much taken away from what XP has become and far too little improvement in "user experience" and in reliablity and function. Windows 7 has a LOOOONG way to go before becoming a fabulous OS.