You are assuming that the programmer's personal desired reflect what is best for humans as whole. Relying on what humans think that is rather than a top-down approach will likely work better. Moreover, many people see an intrinsic value in some form of democratic approach. Thus, even if I could program a super-smart AI to push through my personal notion of "good" I wouldn't want to because I'd rather let collective decision making occur than impose my view on everyone.
This is aside from other issues like the fact that there likely won't be a single programmer for such an AI but rather a host of people working on it.
A lot of these issues are discussed in much more detail in the sequences and older posts. You might be downvoted less if you read more of those instead of rehashing issues that have been discussed previously. At least if you read those, you'll know what arguments have been made before and which have not been brought up. Many online communities one can easily jump into without reading much of their recommended reading. Unfortunately, that's not the case for Less Wrong.
I don't seem to recall any of the sequences specifically addressing CEV and such (I read about it via eliezer's off-site writings). Did I miss a sequence somewhere?
It’s the year 2045, and Dr. Evil and the Singularity Institute have been in a long and grueling race to be the first to achieve machine intelligence, thereby controlling the course of the Singularity and the fate of the universe. Unfortunately for Dr. Evil, SIAI is ahead in the game. Its Friendly AI is undergoing final testing, and Coherent Extrapolated Volition is scheduled to begin in a week. Dr. Evil learns of this news, but there’s not much he can do, or so it seems. He has succeeded in developing brain scanning and emulation technology, but the emulation speed is still way too slow to be competitive.
There is no way to catch up with SIAI's superior technology in time, but Dr. Evil suddenly realizes that maybe he doesn’t have to. CEV is supposed to give equal weighting to all of humanity, and surely uploads count as human. If he had enough storage space, he could simply upload himself, and then make a trillion copies of the upload. The rest of humanity would end up with less than 1% weight in CEV. Not perfect, but he could live with that. Unfortunately he only has enough storage for a few hundred uploads. What to do…
Ah ha, compression! A trillion identical copies of an object would compress down to be only a little bit larger than one copy. But would CEV count compressed identical copies to be separate individuals? Maybe, maybe not. To be sure, Dr. Evil gives each copy a unique experience before adding it to the giant compressed archive. Since they still share almost all of the same information, a trillion copies, after compression, just manages to fit inside the available space.
Now Dr. Evil sits back and relaxes. Come next week, the Singularity Institute and rest of humanity are in for a rather rude surprise!