(I never was a JW).
"Ignorance really is bliss and reality is harsh."
May I offer these thoughts from a non jw perspective, and not directly relating to jw experiences (not that I discount the harm that the WT experience can cause).
Most of us, as we go through life, have to deal with stuff - personal tragedies, problems, etc., and come to the realisation that life can be harsh. It's certainly not 'fair', nor even reasonable sometimes.
The 'reality' of life is always there, even if we don't see it. I was a polce officer for 30 years and even now when I talk to friends who had more 'normal' or perhaps 'sheltered' lives I realise that their experiences (or lack of them) make a difference between us.
I think the important thing is how you (one) deal with the realisation that life can be harsh, cruel, and so on.
If you let it grind you down and take you over, you lose so much. There is so much about life, opportunities, experiences to celebrate and it's a waste to lose those and let the harshness take you over.
This is not the place for war stories, but I'll tell one. When I was much younger I went to a fatal road accident. A young child had been thrown through the windscreen and died (thankfully almost instantly) from horrific injuries. At the end of my shift I went home, picked up my son from his cot and realised how lucky I was. And I cried a bit.
Life is harsh - in many ways we're all lucky to be here. And it pays to recognise that and make the most of it.