I think Vista and it's successors will bring a needed change to the computing world.

Upgraded graphic capability, increased security model, 64bit operation, easier VPN support, IPv6, hardware virtual support, etc.

I'm glad MS is bringing out a new product after 5-6 years and not the same stale product repackaged. This, along with 64bit hardware, gives the computer industry a chance to revive commerce.

Reviving by: new hardware will be/must be bought, 3rd party software must be updated/created and relearning/supporting a new operating system by technicians and OS junkies.
It also gives the Linux OS folks another reason to step up to the plate and reach further, a replacement for the new MS desktop.

Although change is not readily greeted by the masses I will accept it and welcome it, although it WILL obsolete my laptop with a mere 64MB video ram. (just another reason to get a newer $$ toy)

Finally, somewhere in the mix there's something to do with my job security.

Competition is good from an overall perspective.