My ex would have happily ended the life of his child without a shred of guilt if he thought he could get away with it, not out of a wish to alleviate suffering, but because he thinks that disabled and sick people should be exterminated. He was furious that she was being investigated for scoliosis and was 'refusing to stand up straight', going on to say that if it was symptom of a systemic condition that she should have been aborted and I'd 'deliberately bred a defective creature'.
He called his grandmother a 'thing that needs to be shot' on the day she was diagnosed with dementia and his grandfather 'a coward who needs to get over himself and throw himself over a cliff like a man' when he was diagnosed with cancer (oh, and to 'get the fuck on with the inheritance'). He also said that of course he wouldn't do it, he'd persuade them that it would be for the best and it would make sure that they wouldn't suffer,
Of course, each time he was diagnosed with anything, he screamed blue murder for all of the treatment and expected to be waited on hand and foot and no stone to go unturned in keeping him alive at all costs.
He is the reason why I don't agree with the majority on the thread. Because there are evil bastards in the world who will use the concept/a change in the law for their own ends.
(no, he didn't appear to be like that at first, it was only when people started getting sick around him that he shared this world view).