Vista does essentially the same thing, prompting you to enter an administrative username/password almost constantly, if you don’t choose to run your system as an administrator.
I’ve been running Debian for years, so I guess I’m used to it, but I don’t have to use sudo for all that much.
True to a point. But having to enter username/password to install applications and such is nowhere as involved as having to know/understand Sudo commands. It's like having to run a DOS window in Windows in order to do things. Ridiculous, IMO.