School for me (in Ireland) was more or less a race to get out of school (+ concomitant bullying) and into university to study what I was interested in (maths - at that point I wasn't able to advance any further on my own and there was nobody who could help/guide me further where I lived) - the idea of adding a year on felt like it would be a waste. In retrospect, yeah I think I made a good call. Happy to see other people getting benefit from it though.