Guilt is a useless emotion. It has no positive benefits.
I wholly disagree with that ST. There are times when guilt is highly beneficial. Of course those times happen when we have actually done something wrong. It is what makes apologies genuine and can keep us from doing or repeating bad behavior.
Guilt, it seems to me at least, is borne from empathy. We feel guilty because we empathize with how we image that the other person is feeling. We know how much pain we would feel if we received the treatment that we are accused of perpetrating.
Now, when guilt is misplaced, when it is borne of lies and brainwashing, that's a bad thing. That's the guilt that many of us here seem to feel. We are conditioned to believe the bad things that our SO has told us, so we feel guilty when they complain. Also, we all, for the most part, seem to be kind and caring people. We don't like knowing that the person that we love is in pain. This adds to the delusion that we have somehow actually caused the pain. So, the guilt can be a signal or catalyst to examine the complaint with an objective eye. It can help us the reality of our respective situations.
reincarnate93, I'm sorry that you're having to go through all of this. I know how much it sucks. I hope that you can find the silver-lining in all of it though.