Yes all sides in war commit atrocities. Are you saying that their behavior excused ours? We deliberately targeted civilians in a way that we knew would cause tens of thousands of deaths of innocent people. Japan indeed needed to be stopped, I just don't like the way we did it.
Trying to affect political change by targeting innocents is our definition of terrorism, no matter how evil their rulers. We tried the same tactic at
Dresden where possibly 25,000 non-combatants were killed. That's quite a combined body count (we still need to add in Nagasaki).
I just don't think we acted with honor. I'm well aware that most Americans see it as clever and heroic. Ask anyone here; I don't often see things politically, militarily, environmentally... like most Americans.