"Still, three people die in the UK every day while waiting for an organ. It should be compulsory, unless a person refuses. Opt out, not opt in — like it is in other countries. If a person would accept an organ if they were dying, then they should register as an organ donor themselves. Who would rather die than accept an organ? Nobody should die waiting for a kidney that is buried in the ground, disintegrating."
My problem with opt in automatically is that it works ethically in ideal world, but there is a also other side of the coin. In our world number of "accidents" could increase so certain wealthy people and their family members would get organs from suitable "donors". I am not implying that necessarily wealthy would do it on their own but, it is quite likely that certain black and gray market would be created. Similar like cases of stolen children during the birth, while doctors were pronouncing them as dead.