> So if you decide not to have kids and you don't have a brother or sister who can keep the bloodline going that is an absolutely fine choice, but it's also a s

> So if you decide not to have kids and you don't have a brother or sister who can keep the bloodline going that is an absolutely fine choice, but it's also a shame that that genetics and traits that were passed down for centuries get lost. That's silly, unless you family has been has been having a single child for each generation the last 9 centuries, the genes of your ancestors from back then will probably be in hundreds or thousands of people living today. On average, people have been having more than two children per family for hundreds of years, so each generation you go back will have exponentially more descendants, and up to some limit the number of ancestors you have also doubles each generation you go back. Of course once you go back far enough it turns out we're all related. So it may be the case that some of the genes of your direct parents will not get passed on if you and your siblings never have children. But it's extremely unlikely that this means the end of a 900 year bloodline.