You got your genes from your family. You get your legacy from your choices.

What you were given at the start is fixed and was never up for discussion. Everything after that is assembled out of decisions, most of them small and repeated, and that part is inherited from nobody. Two people raised in the same house can end up leaving entirely different things behind them.

Stop treating the inherited part as a prediction. Look at the trait you assume is simply how your family is, and test whether it actually holds for you. One deliberate choice against the pattern is enough to show it was never fixed.