How much of my personal experience should I tell the world?

[Der/die AtheistIn]

And what's your part in this? Did you ever ask them their thoughts/positions on religion? It may never have occurred to them that it was causing you discomfort and needed to be discussed. 

If you want to hold onto it, that's your choice. In the end I don't think it will do you much good.

How can it never occur to them that it was causing me discomfort? As mentioned they don't believe in Hell. Doesn't the fact that their kid believed in it right under their noses concern them?
I understand that a kid might have questions to address to their parents, but this doesn't change the fact that they should've told me what they wanted me to know. They wanted to teach me something, yet they didn't. It's like they didn't think things at all. Not that they had a wrong plan, it's like they had literally no plan and didn't even know that. 
Also, I don't want to hold onto my pain. I don't think I have a choice. More than 5 years have passed since I have stopped believing in Hell and I still didn't forgive my parents. I didn't trust to tell them about my suffering, because how can I trust someone who made such a mistake to understand me? 
I tried to simulate in my mind what would happen if I told them how I feel. If they will eventually understand that they did a mistake and apologize, it wouldn't change the fact that this situation could've been avoided very easily, was obvious that it should've been avoided, they didn't have any obstacle not to tell me and it would fit their beliefs. It also wouldn't change that they didn't realize how traumatizing fundamentalist religion can be. 
Also, they use religion for social reasons as well. Why are they worried that society will judge them if they didn't have a religion, but not worried that it might judge them, because they weren't competent enough to tell me what they wanted me to believe? 
Of course it would be better if they realized this later than never, but it doesn't make me much happier.
There is also the fact that I'm not sure they would be able to understand what they did wrong if I told them.  
Also, even if you have negative emotions towards something and you can't change that, it doesn't mean that you'll always be sad. You can concentrate on positive aspects. I stand to the point that true forgiveness comes naturally. If I'll ever forgive my parents that's good, if I don't then so be it.

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All of it. Be an open book, for the whole world to read. If people don't like it, that's their fucking problem!

Thank you for your answer. I mentioned that I'm not worried, just curious, but thank you anyway.