Your facts are powerless against their feelings.
I know that. I am also aware that many lurkers read FR, and I make the effort to put out accurate information for their sake. Some people fall for woo (a term I've seen used to describe pseudoscientific quackery) because they genuinely do not recognize woo. All too often, they or their children end up with serious life-threatening illness. I've seen heartbreaking videos made by mothers who thought they really were giving their children healthy food when they gave them raw milk--right up until their children ended up in the ICU. To try to educate the people who genuinely cannot recognize woo (and maybe save people from serious illness), I make the effort to factually counter woo every time I see it.
I do not expect to be able to reach the true believers such as those I have been debating here. They serve a function, though--they deliver the woo right to me so that I know exactly what I need to counter.