Is it common for seniors to have an end of life crisis?

My mum and dad have started acting weird since my dad turned seventy. My dad said that he feels like he’s running out of time and my mum has been being nasty to me and to my dad, saying to me that living with my dad is like living with a geriatric and telling me that I was wrong for standing up to my dad when he was being nasty to me. Then she said to me that she wants a vacation. I said I want one too. She said she meant alone. I said so did I. Each time, it was a go at me or at dad, then both of us. What’s going on with them? Are they having an end of life crisis?

Is it common for seniors to have an end of life crisis?
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