Because they just tend to ignore you once you start pretending to not "understand" the plain words they say.
In what, 4 threads now?
I, on the other hand, consider that a challenge. I think the most boring thing in the world is if someone says, "The sky is green" to just disagree and walk away. That's the kind of challenge I specifically look for on these boards.
I'm actually here looking for ways to get thru to blind partisans. That's my idea of entertainment. Most folks just walk away.
Where's the fun in that?