I believe this was meant to be a serious discussion, not a joke, so please actually contribute to the topic instead of making fun a of a serious topic. Discussion was the original intent, it was agreed to that DnD threads will have to actually be proper DnD threads if wanted by the OP.
On topic:
For me, the line between euthanasia and suicide is pretty clear, although there are exceptions to it (not going in to the details here, touchy subject for me). As for euthanasia, I think it should be allowed, but only if agreed upon by both the person wanting it, and their family too. If one is at a point in life where there is nothing more but suffering (terminal, etc.) and they request it, I think it should be granted, although time should be given to properly think about it.
The reason the family has to agree to it, in my opinion, is because they are also affected by it, but they too would understand the reasoning behind the person wanting euthanasia.