Spend a couple hours reading up on the Transhumanist movement.
Wiki page for a start
There are very strong arguments that you may not ever die. I don't mean in some sort of hand-wavy, "information is never lost and everything is connected" hippie kind of way. I mean it literally. You are living on the cusp of an age in which mankind will be able to overcome death through technological means. Your consciousness may exist indefinitely.
It's certainly not a sure thing, but at 29 if you adopt a healthy and risk averse lifestyle there is a very good chance that you will be alive when these technological advancements occur. Your children have a great chance.
At a glance it may seem loony, but there is a very deep and nuanced body of philosophical and scientific thought devoted to this issue if you look. May give you some hope.