CCNPThis. I have not heard of anyone who seems to be a sysadmin type actually chime in. All the negatives I'm hearing seem to be "users" who are annoyed by UAC, without understanding what it actually does (see above link).
MCSE
Juniper
And I know how UAC works and fully support it's use..Funny how that works.
I think the best analogy is this; Just because the building can stand with 4 walls and a roof, doesn't mean it's smart to remove the foundation.