I have three siblings - there is a clear split between us, and we are each very different - although used to be exceptionally close, now less so.
From social media and tv, it looks at though everybody gets on reasonably well - or at least muddle through as they're family and it's Christmas.
I just cannot stomach a sibling - their attitude towards my parents, towards me, towards anybody who dares disagree with them it awful! Their outlook is very bitter, jealous and mean - despite us all having the same upbringing.
I haven't had contact for almost 2 years - AIBU to think that this is more common than we perhaps realise? Maybe Christmas makes these things more obvious.