You're going to need to place a value on "good", because that's an extremely vague term. However, you might be well-served by some of these articles in the FAQ. If those don't answer your question, let me know and we'll get a discussion going.

This post has been removed, since it's not a history question per se, but rather solicits opinion. This question may be more suitable for /r/AskHistory

As mentioned by the other poster, you may find something of interest in the FAQ; there have also been several posts asking about justification of the bombings here, so a search on 'hiroshima' or 'nagasaki' will turn up more discussion