War is a beastly business, it is true, but one proof we are human is our ability to learn, even from it, how better to exist.
The question is: how bad do things have to get before you will do something about it? Where is your line in the sand? If you don't enforce the constitutional limitations on your government very soon, you are likely to find out what World War III will be like.
This is how it has been since time began: If you want to make something really worthwhile and true, then you have to suffer for it.