The thing is, Desu, this is also a belief. FE'ers believes the Earth is flat, "so therefore this must happen, this must work like this, hmm this doesn't explain this entirely so how about this". One reason for this forum is for FE'ers alike to come and try to help fill in the gaps of the theory by hypothesizing, sharing their knowledge of physics and other sciences, etc. This, lately, hasn't been the case...
Its much harder to look at the FE proposition without thinking about it from a neutral point of view (as in not taking much information for granted) which is why you'll find many people "defending" themselves even if they aren't being attacked. The theory simply looks offensive to their beliefs (and they ARE beliefs) because of how long they have lived with the knowledge that the Earth is round without ever questioning it. It seems like a constant to some; something unquestionable.