I would take the opportunity to extend life, indefinitely.
The thing most people don’t get yet, is that it is only stable in a mathematical sense if everyone has that option. Thus for the option to be available to any (with any reasonable probability of actually living a very long time with reasonable choice and opportunity), then it must be available to all. What individuals then do with it is up to them.
I have lost a lot of friends in my life, some to suicide, some to drowning, some to car accidents, some to motorcycles, some to climbing, some to cancer, some to heart disease, diabetes and other diseases and some to senescence. It happens. One goes through grief and goes on. In the not too distant past most families lost most of their children before adulthood – it was in fact the historical norm. We have evolved the ability to deal with it, and that doesn’t make it easy.
Another thing that very few people “get” yet, is that exponential changes in technology will make universal abundance of most things a real technical possibility very soon; giving each of us substantial choice about what we do with our vastly increased time and available options to learn and travel and experience. Part of making that work is getting people to understand that at our level of complexity, evolution is much more about cooperation than it is competition (however competitive any of us may be as individuals – and we all have our competitive sides). So an essential part of freedom (if it is to survive long in reality) is acknowledging and taking personal responsibility for our existence in ecosystems, communities and cultures.
As I started writing this sentence, I got a text that a friend’s husband died last night – so very real for me right now. And like the vast majority, I grieve and support and go on.