you have been miraculously fortunate in your personal ancestry
consider the fact that for over 3.8 billion years, everyone one of your forbearers on both sides has been attractive enough to find a mate, healthy enough to reproduce, and sufficiently blessed by fate and circumstances to live long enough to do so. not one of your pertinent ancestors was squashed, drown, devoured, starved, stuck fast, untimely wounded, or otherwise deflected from it's life's quest of delivering a tiny charge of genetic material to the right partner at the right moment to perpetuate the only possible sequence of hereditary combinations that could result eventually, astoundingly, and all too briefly.. in you.