Death

Hard to say for sure, but I think everybody thinks about it from time to time. Spend time with your grandchild if you can. There is no legacy in the world better than knowing you helped teach a young person what was probably much harder for you to learn. Far better to have a single child know you, than to have millions of people worship a statue of you.

Death will come, as it does. Don't dwell on it. There is nothing that can be done about it.