Do you have an idiom or a common expression about the following: "Old age isn’t pleasant. / Old age isn’t a joy."? It's a translation from my native language. I try to say that in their younger days one's life was better, more curious, jollier, with good health.
Given how the old person doesn't like the current situation and wants to reminisce the good old days it is quite fitting to come across as somewhat rude. So FeliniusRex's answer of Getting old stinks could be quite fitting.
If you want to focus more about what was better about the past you word it exactly like that, as something in the past:
- When I was your age I could easily lift ...
- In the good old days we actually talked to each other over dinner.
- We used to play in the woods for hours, climbing trees, chasing rabbits, those were the days ...
When thinking about someone in the situation where it's relevant to say old age isn't a joy I fail to picture anything other than a grumpy old grandpa who complains to everyone around him, hence why I cannot think of an idiom that means the same but doesn't have that grumpiness to it.