Rockport, the original post does not sound like the writings of someone who made a spur of the moment decision. It sounds like this has been going on for a while, he's had plenty of time to think about it, and has finally (more or less) made up his mind and is simply boiling over about it on this forum.

Nobody doubts the wisdom of having an open mind in such situations, but I suspect he's already been through that stage many times. There's a point at which "being open-minded and reasonable" evolves into "being a sucker who puts up with abuse indefinitely".