Of course initiating a war resulting in death and destruction on the scale of the Civil War can't be described as a good thing either. It was a tragedy for those involved.
The problem here is that we are using our own values to judge men who lived in a different age. I don't think people like George Washington were hypocrites. They were doing the best they could in the times in which they lived. And they did very well indeed. They made our current morality possible.
Would you like to be judged by the standards of people who live 200 years from now?