It's funny because majority of people on this topic are trolling.
You all obviously hate him for his question, therefore all of your responses will be filled with hate.
Now, for my opinion.
Trolling is only bad when you can't take a joke, or if the troll is mildly retarded. If you are a competent human being, and a troll, you probably will know when to stop the joke. On the other hand, many trolls are mildly retarded, so some jokes go too far.
Personally, I only troll those who do wrong to me or others, my good friends (that know I'm kidding), and when it's just too funny to pass up.