I think the thing is that kids vary so much
DS3 just made national average in NC reports but has such severe anxiety / langugae issues / compulsions / social isues that he will always need a carer and has zero chance of independence.
All these things are snapshots of somoenes life and tells you very l;ittle, it could well be the only bright thing that happened to them this week due to their failing marriage / terminally ill parents / dom,estic violence / breast lump scare / redundancy and house repossession.
Personally the only things that scare me with ds3 are the EEG he is due next month, and the fact he will need lifelong care becuase I have witnessed poor standards (and high) in the past.
With ds1 it's the aggression: I am pretty broke but would lay a tenner on him doing a stretch either behind bars or in a psych unit at some stage.
And when I am happier those worries are things I deal with; when I am tired (they both need night supervision and I am still BF my youngest) or things have gone badly elsewhere they play on my mind mroe- alst year for example we lost opur income when DH was amde redundant: that pushed our stress levels up through the roof, and amde it all- in particular the powerlessness- seem worse. I was invovled in quite a few MN barneys at the time becuase of it all.
And there are trigger areas for other things too- I can deal with ds1's eating disorder even though rarely it can be fatal becuase i've been there too and survived it so it's in my sphere of understanding: the aggression and ds3's EEG threw me far further as they were outside my remit as it were.
I think its rare otehr peopels wories stand alone tbhy
BUT I also think that following a DX or when a child is at particular risk then it is normal to feel like the OP and there may be a case for stayng within SN on here or even looking at SKITUK for a bit, self protection sorta thing.
Even on SN there is a wide field of variation and there are kids who may die and kids who have a chance of independence, so it's important that we learn to cope as total hiding is impossible. But it is a learning process, one I am many years into now (and twice over) and only just becoming able to look back and recognise.