It's totally non-scientific, but the Windows Developer Show podcast holds a weekly "Weigh In Wednesday" straw poll, and this weeks is about Windows 8 on the Desktop.
Using Windows 8 on a "Desktop" PC is...
Wonderful! (48% with 96 votes)
Okay (35% with 70 votes)
Challenging (10% with 21 votes)
Terrible! (7% with 15 votes)
You can argue about the audience here skewing the results, but most of the places I frequent where people rant and rave about the Windows 8 changes are frequented by the same developer types. So these results shocked me. 83% of the 202 votes were favorable here.