No expert here but I retired at 60 and I haven't been bored
one minute and have never had a desired to go back to work.
For me there isn't enough hours in the day to get done what
needs doing.

What might be going on is that you haven't found what you
love doing. What your real passion is. Give it some thought
before committing to another job that you may be bored with
and people you have nothing in common with.

If as you say you can get along financially then find out now
what you have always had a desired to do and go for it.
Chances are you'll get so involved that you will never have
time to get bored and you won't need to go back to work.

Enjoy and best regards

B&R

__________________
"What you hear in a great jazz band is the sound of democracy. “The jazz band works best when participation is shaped by intelligent communication.”
Harmony happens whenever different parts get to form a whole by means of congruity, concord, symetry, consistency, conformity, correspondence, agreement, accord, unity, consonance…….