> #3 is exactly what the above remark addresses. If I can show my boss I'd be treated properly elsewhere, the boss sure better get on board and start doing those things.

If you feel you are treated better elsewhere, as a manager I'd help you transition to that elsewhere. If that is what you really want and think is best for you, I would make it as easy for you as possible. If you think money is most important to your current situation (house, wife, kids, debt, ...) and you're skill set is beyond my budget, than this is fine with me.

I'm more interested in people-relationships than job-relationships as I have met many of my employees in other companies and we're still friends - and most of them left for a different job with probably more money. Some of them told me years later they should not have left because I usually invest a lot into people development and money is only one parameter to job satisfaction.