Thanks gkloken and rikka!
Your answers are very much appreciated.
I really don't like asking these kind of questions, because it looks like I'm a coward tourist pointing out negative things instead of those that really matter.
As a matter of fact, I hate when other foreigners ask all the time the same questions about my city...

Actually, my doubts were generated by the contrast between what I saw in Cape Town, and the news I read about South Africa when I returned home.
Although I must say that there's a lot of negative press from Southafricans themselves.

Here I see a familiar pattern when comparing these ttitudes to those of many argentines that left the country. It's like they need to convince themselves that they made the right choice when they left.
It's curious how different peoples react the same way when facing similar problems...

Well, thanks again!
Luis