Leonardo said:

CatBus said:

3PO would have to fill in for all of R2's parts. I hate to think how HE'D have to interface with the imperial network. Nope, can't unthink that thought...

Ahhh, thank you very much CatBus! Now I can't help but imagine 3PO shutting down the garbage mashers on the detention level by frenetically humping a hole in the wall.

Also, consider: the power socket gag in ESB would have been funnier, and you'd always have a vague icky feeling whenever 3PO claimed to be "human-cyborg relations".