Mine was when my rather hate filled oldest brother became empowered by his coming out of the closet about his complete atheism accompanied by a vindictiveness toward Christ and God.
My father was long gone from that home and my elder brother sat at the head of the table and ridiculed giving thanks.
22 of us were just plain sad. My mom cried. Only half were Christians but nobody wants hate.
OK. It was the worst but it was the best. Mom came to see that all the physical preparations were important but that personal involvement was more so. I love my mother and I love my brother, But I love my children more and as bad as it was there was a purpose for everything under the sun.