I don't think any relative "afterwards" should be allowed to overrule a decision to donate. But I also think people should be aware they may be kept longer on life-support machines, etc., if they agree.
When you give blood they give you a form to opt in or out. I assume it's just an opt out form now.
I don't think it's a question that should be asked of grieving loved ones. My kids and their kids (if they have any) will hopefully never know that there was an option.
I will probably be in the situation where I need donated corneas and my instinct is to refuse to have them as I find the whole idea repulsive and it appals me. I will be interested to see if my opinion changes when the time comes.
Gulliver suggesting he is more intelligent than, Danny, ummm.
In any case as long as people are aware of what they have signed up for- and don't just believe they will be dead and know no different... fair enough.