I simply hate heights, and on numerous occasions have accidentally found myself on precarious rock ledges by total accident.
The South face of Pen YR Ole Wen was a classic example, where i managed to almost get myself trapped on a technical bit of scrambling, that was way beyond my capabilities.
Since then, am i very selective in the walks i undertake, checking first the entire route, and possibility of tricky ground.
Ive traversed Bwlch Main a few times over the years, and in favourable conditions it poses few problems.