No, nobody I know has been murdered, thankfully. But I'm sure if someone I care about was murdered that I would hate the murderer. If anyone who knows a murder victim tells you that they do not feel any anger towards the murderer, that someone is either lying or they didn't really care about the person who got murdered.
If you're against executions by electric chair but you're still okay with the death penalty as a whole, how you would execute someone on death row? My concern is that we're too concerned about making executions "humane" so we're working to make executions painless and destroying any deterrent value the death penalty has.
As bad as the atomic bombs dropped on Hiroshima and Nagasaki were, the alternative would have been much worse. Without the atomic bomb, the United States would have had to perform an all-out, full-scale, D-day style invasion of Japan with ground troops. And that would have cost at least two million lives on both sides, assuming it worked.