For most "adults", exactly where they find themselves after about age 15 or so is the result of their journey. All that has happened to them in their JOURNEY to that point. Most always some combination of Nature AND Nurture.
How many here can say beyond any shadow of a doubt that NURTURE had nothing to do with where you are now? Parents wanted a girl but had you, 5 sisters but no brothers, 5 brothers and 5 sisters BUT the sisters were always treated better (in your mind anyway) The list could go on and on.
Maybe YOU were a first child, last child or ONLY child?