I prefer that too.
But sometimes when asked a pointed question, the trolls merely run as they don't really want to 'debate', they want to spew as many talking points as possible in as short a time as possible.
I really hate trolls.
I can't disagree with you........
But as much as I dislike trolls I totally despise the hit and run FReepers, and there are many of them. I see them often on the smoking/tobacco related threads. They will make a horribly disparaging remark and then not come back..
The other type I despise are the ones that will bring a disagreement with you from one thread into a totally unrelated thread.