>>58129951
>The child you've been raising, doing your best to teach right and wrong, was a fully grown person this whole time who had has been deceiving you for their 'entire' life
>They don't even think of you as their father, just as 'the' father
That's what would do it for me. The realization that I wasn't raising my child, or even any child, but more like a roommate who has been lying to me for decades.

I could probably get past it eventually, but the mind break would be real.