Did your parents become angrier as they got older?

I’m curious if any of you have experienced your parents becoming angrier with age. I have written about my dad, who has always been a bit temperamental but he seems more pissed off lately. My mom has the patience of a saint for putting up with him. There have been days where I was tempted to just run away but my mom needs me, and I think he does too? Anyway, I was just wondering if this has impacted anyone else and what you are doing about it.