The "JOHN Q" in me

i am sitting here watching this movie. JOHN Q. i have seen it before. But as i am watching it again , it is SOOO much more powerful and touching NOW that i am a parent. There was a scene, where he was willing to kill himself so that his son could have his heart. He said "my son will bury me! i will NOT bury my son!" As a parent i couldnt fatham EVER burying my daughter. HOw does a parent get through the death of a child?