It is not just religion, but all forms of woo, that suffers from the avoidance of logic and evidence.
It all seems to consist of a few observable things + conclusions based on illogical extrapolation and embellishment.
- I see exhaust and steam from airplanes in the sky; that is bad. Some people have diseases; that is bad. Governments and other organizations have power and sometimes do things I don't know about; that is bad. Therefore, chemtrails are a massive conspiracy to make people ill.
- Poo is gross waste matter; I don't like poo. Some people have diseases; I don't like diseases. Disease must be caused by having poo in your colon. Everyone should have enemas to eliminate disease.