I thought about it to get a WIN8 tablet because I thought it would be nice to have the functionality of a "real" OS on a tablet.
However I decided against it. And it was a good decision. The TF101 with ICS is works very nice beside those ****ing reboots when it enters deeps sleep....
The two main reasons why I decided against Win8 are.
1. Win 8 ARM devices will have locked bootloaders
It's my device. I payed for it. So I decide which OS I'm running on it.
2. Win8 Won't be that functional on ARM devices because a lot of the x86/x64 programs won't run on them.
Android has the advantage here. It's already a established mobile OS which a huge number of apps which are getting better and better by the day.
It will take quite some time to make the normal windows programs usable on a Win8 ARM device. So why leaving a already functional ecosystem for something which will probably somewhere in the future be a good mobile OS.