When my nephew died 10 years ago we were all in a state of shock at the hospital. His parents, my brother and his wife were asked about (very gently and sympathetically)donation. There was no way in he11 that they were ready for a decision like that and they said no. A few years later when my brother could talk about it, he expressed his regret.
I had no say so but I would have said yes. I had already thought a lot about it for myself and everyone in my family is very aware that I want them to use anything they can, even parts that we can't dream of right now.
Make the decision now and talk about it openly with friends and family.
I have no problem with somebody benefiting from my organs. I plan to be cremated. Thanks, I'll do that.