Trap, James, I couldn't agree more.
There is no reason for ill-will between the shooting disciplines. Lord, there's few enough of us as it is!!
As for SASS and NCOWS, I find that the animosity that sometimes shows is on an individual level, not an institutional one. I know of no one in NCOWS leadership that looks snobbishly at SASS and have never found that attitude among SASS clubs toward NCOWS. There are, however, certain individuals in both outfits who just don't care for the other group. Who knows why? Maybe it has to do with some obscure bad personal experience somewhere back down the trail. Nothing an organization can do about that but try to be patient and considerate of others.
For myself, I am a life member of both and glad of it.
I have many many friends who are SASS shooters and they're all good folks -- and many of them could be looked up to as examples of NCOWS authenticity (if they were in NCOWS, of course).
I personally prefer the rules, regs, guns and social aspects of NCOWS to those of SASS, but have had a great time at events with both groups. There is a difference, I believe, in their overall philosophies, but that's fine. Let everyone find the place where they're most comfortable and enjoy themselves.