stephen, You are mangling several issues into one. This makes it difficult to answer.
1.) I cannot agree to foregoing trial and killing right away for economic reasons. We are talking about civilization here (mostly: "how do we deal with Bad people"). However, if you want to go into this: the federal military budget is so totally out of proportion, no one knows how many zeros that number has. So to putting him to trial would cost two or three bombs at most. That is not much compared to the operating cost of an aircraft carrier.
2.) About those death tolls (and this is very difficult to use in an argument): how many Americans died related to the event we now call "9/11" compared to how many Americans died in the following wars?
3.) Yes people do care a lot. Some care so much they go out of their way and belittle dissenting voices, or call names.
4.) I did not tell you to shut up or to leave. So from my point of view you can still post whatever you want here, regardless of how little I agree.
5.) I will not go into all those provocative maneuvers you put in your post. I consider myself too grown up.