Bill - the problem with your suggestion is manifold. The most obvious: Who is to arbitrate and decide what is ethical and cultural. Even in my lifespan (and yah, i'm not a youngster, but i ain't an old 'un yet either) ethics and culture have changed vastly. From culture to culture values are different. Therefore, you might say that your ethical camp had the right ethics, but Hitler believed he had the best one. The example used often when discussing this is if you were a British officer in India way back when and watched a widow get burned on the funeral pyre of her dead husband, would it be right to step in and stop it or not? Ethically there, at that time, it was considered unethical not to burn her. Is there one universal truth? Who decides it - your ethical camp? That woman who was disconnected from life support would be our generation's example - everyone's opinion on whether or not it was ethical was different. Therefore, ethics are extremely subjective. Life is too much of a serious matter to try to meander our way figuring out what the objective ethical rights are - when we can just seek out the answers that were given to us. I'd rather go by G-d given rules, than ones made up in chatrooms and web threads.
As for those out there having trouble with "G-d didn't save everyone" with miracles, there is a famous story of King Solomon. He had a dream that two of his employees would die. He sent them away, hoping they would escape their fate - yet they died where he sent them. The next night he had a dream and was told that they were supposed to die in exactly that spot, and he had facilitated their death by sending them there. In other words, yah, we hate death with a passion. Guess what, folks, hate to break it to you - "we are all of us, in the midst of our lives, dying." Death is part of the world. Where we die, how we die...all that is part of Providence, not just those who were spared. Therefore, if you look closely, you will see how exactly coordinated life is, even when folks die. The man who stepped aside and let a lady on an escalator before him watched her fall and die. She was supposed to be on the faulty step, not him. Sometimes, when it comes to miracles that relate to folk's lives being saved, they got an additional extension of their time, postpone the inevitable just a bit more to accomplish a bit more in this world.    In fact, many sages advocate "linkeages" to be able to merit more life extensions. What does that mean? Every person who dies leaves a void in many lives. Therefore, when a person is decreed to die, all the emotions and feelings of those around him/her will be taken into account before his death to see if it will cause too much pain and void in the world at that point. There was a rabbi on the lower east side of manhattan who prescribed to this - to the extent that he would go every week to some lonely widow and scrub her floor on hands and knees saying "who needs who - maybe the fact that she needs me is keeping me alive." He knew whereof he spoke, because when she died, he followed.