Why do R C fear debate more than other Christians?

Why do R C fear debate more than other Christians?

I was born R C but my respect for my own has been steadily eroded by the fact that I have been ejected, from most R C forums that I have found and joined. Sometimes with no reason given and once simply because of my name and avatar.

The tolerance that I find in these R C sites is basically non existent and even before posting anything I look at various topic and see that the closed ones are mostly those that go towards debate.
In looking at various posters that are banned I see that some are banned for fairly non controversial subjects and that few debates on the morals of scripture are allowed.

I do tend to get in some trouble at some Fundamental sites but see some tolerance in most of them.
R C sites though are what I would call fully intolerant.

Do R C fear debate that much that their moderators must be so intolerant that no decent from the status quo dogma is allowed?

Why do they show such fear of normal debate?

Is it the same mind set that made the old Church brand scientists as heretics if their science did not back up the Church view, or is the fear of debate they show from some other source?


Regards
DL