If you’re doing them, any time before the deadline from here is fine.
If you’ve got complex stuff going on and are using a tax service or accountant, I’d say the best window is the back half of February through the first half of March. This misses all the people on the front end who rush to get them done the femtosecond they have all of their documents, and also misses the people on the back end scrambling for the late-season rush.
Middle age guy here (if I live out my family’s typical life expectancy).
I try not to worry about death, as it’s something I can’t change. Doesn’t mean I’m ready for it to happen tomorrow, just that I realize that it’s going to happen when it happens and isn’t worth wasting thought on outside of preparing affairs for it once it gets closer.
I’m not religious, but I’ve had an experience (and others have had experiences, such as out-of-body NDEs where the details that they witnessed in places and circumstances they shouldn’t have been able to see were later verified by others) that indicate to me that we continue on somehow after death… it’s not a nihilistic void.
But even if it were one… that’s not so bad. You wouldn’t perceive stimuli, you wouldn’t notice time passing… the unbelievably long mass of practically eternal time between your death and the death of this universe would be the blink of an eye for you. And if scientific theories about Poincare recurrence of the universe are correct, then eventually you’ll go trhough life again from the same starting point, none the wiser that you didn’t exist for an unfathomably long time.
In short, try not to worry about it. You can’t change it, and once you get there, there’s either something or absolutely nothing afterward… and you’ll be fine either way.
Edit: spelling