@manu@chevalier26@actuallyautistic My grandfathers were both grumpy old bastards. In one case in and out of surgery while they fished shrapnel out, but the other one was blue collar and worked until he couldn't. I'm certain that a lot of his grumpy came from never-ending pain.
Being made deaf by his job did not help, hearing aids were unavailable and sign language wasn't taught to used up grunts, so he just got left to deal with it as best he could.