It’s not the “tiredness” so much that gets to me but the “too lazy to Google” ones. (Something I have been guilty of. But I’m getting better.)
Take the latest thread on geographical anomalies. I like the occasional return of something like this. (Something I pointed out in the thread.)
Sometimes it’s fun to revisit a topic.
I think it might be discouraging to new visitors to see a sticky or some such telling them not to start a thread on a long list of topics. Is there question new or old? Where do you draw the line? Etc.