Having been in the service, salutes are about honor and respect. I'll give a salute, or return a salute if it was a good fight, win or lose. If you pick me, vulch me, or I do the same to you I don't give salutes, nor expect them.
And there is that, if your giving salute because you expect one in return, your missing the whole point of a salute. A salute is NOT like a high five or something.