Yes, but I'd say at least a 60% of people click yes every time UAC appears, so having or not it's quite pointless in that case :3
Personally I'm not a lover of UAC (even If I understand it's purpose).
I open registry. Prompt. I open windows folder. Prompt. I install a program. Prompt. I copy files. Prompt.
It's a bit annoying. The only time I don't do one of these, uh oh, I allowed UAC.
I prefer to scan before install something or check in other ways before doing some strange changes.
Of course, I don't change other people UAC, but I can assure most of them click allow every single time it shows.