You have an interesting point about passing on legacy, but then again there are so many people born every day, that there will be more than enough people to perpetuate the vision if they can learn about it. Having a child furthers memory only temporary. I myself don't know much about my grand-grandparents and have no clue about who their parents were. I doubt many people do. In the end, we all get forgotten, but our work may improve the lives of next generations.
> It is not an either/or proposition. It is worth in in the long term to find balance, not for yourself, but for the future of humanity.
I strongly agree, and that's how I try to look at it. I don't want to burn out, but I personally don't consider starting a family to be an important goal for me. I respect that it is for many others, and I believe they should be supported. Some people sacrifice themselves for others to have better lives. Some people are the others. And many are in the middle. I don't think any of them are making a bad choice.