I think that sometimes, we just need to get some things off of our chests. Now that you have gotten it out of your system, you can relax and go dark again. Should you have done it? Probably not, but that ship has sailed, let it go.
You can also pay attention to what triggers you to do these things and sort of head them off at the pass before you do something that you know is unproductive!
I guess I gave the wrong finger to the wrong man...