Interracial children = culture loss and rejection from people associated from both parents culture.
I'm a hapa myself and it sucked not being to be able to identify with whites or Asians, rejection on both sides lead to depression, anxiety, and no comfort from either parent leads to loneliness and inability to relate to your own peers.
It's not genetic, it's just these factors that lead to unhealthy thoughts. Crippling loneliness and loss of identity.