Common Sense - why would they want organs from a dead person - the organs don't live after a person is dead - if that is the case, everyone buried in the cemetery has living organs - not

I first found out about this about 2;years ago on a different report stating they put people in comas so their brainwave activity doesn’t record & call them braindead; no such thing as brain death its all apart of this organ harvesting. Felt it happened to my brother-in-law who had a bad motorcycle accident in Oregon. I flew from ND to visit him & his family in the hospital & as a nurse felt he was reacting to my voice & was wanting to let me know he was in there still. The one cleaning his vent tubing told us it was just relfexes.😢 I couldn’t believe how good his wounds healed after just being in a major motorcycle crash, wondered what they gave him to spare his organs. When my niece and her 2 brothers decided to take him off life support they were signing papers, in the process hospital found out he had skin CA so declined his organs & just let him pass away,😢 I’m still haunted by this today, was not happy with the decision my niece & nephews made, but wasn’t my decision to make.