I think any subject should be challenged from all angles. Maybe you disagree.
gbeeuPersistent Debate Troll
This type of troll loves a good argument. They can take a great, thoroughly researched and fact-based piece of content, and come at it from all opposing discussion angles to challenge its message. They believe they're right, and everyone else is wrong. You'll often also find them leaving long threads or arguments with other commenters in community comment sections, and they're always determined to have the last word – continuing to comment until that other user gives up.
I don't disagree on things for the sake of disagreeing. For example, RM3 and I have agreed on many points on tough subjects. I have been vocal about such agreements. Also, just because we agree on something doesn't mean we are right, it just means that we agree on something. So, if you think I am wrong about a subject, by all means, point it out.
I am making a guess but I probably agree with anyone here on 80% of the subjects; however, that 20% of disagreement causes such headaches.