Nothing wrong with venting - we all need to do that sometimes to get it all out of our system.
It is interesting, after my D, I decided to stay in my very married suburbia b/c while there is no life for single person, it is a really great place to raise kids.
I am a perfectionist so I immersed myself in my neighborhood b/c I wanted to figure out what "normal" M's were like. I am good listener so people tend to open up to me - I felt like I was collecting data! Much to my surprise, I found there were a lot of similarities between M people when they talk about their spouse and D people in surviving when they talk about this WAS.
And for some reason, many of the W's in the neighborhood act like very demanding and micromanaging bosses - where you feel like you can never quite get it right. And I also noticed that the H's don't really complain - they just get quieter. I often wonder if these are "normal" or are they ticking bombs just waiting to explode.
I guess what I am trying to say is that yes, W has some anger and/or rage issues. And your reaction is completely justified. In fact, if I were in your shoes and considering saving my M, I would make her addressing those issues a must before I would consider reconcilliation.
But please make sure you don't leave the M b/c you think there are other women that may be better out there. Other women you interact with will seem like a soothing balm on your ego compared to W b/c well it is always nice in the beginning phases of an R. There may be other more compatible women out there - or it may be that M by definition can be a royal pain in the you know what b/c it is stressful sharing territory with another individual - especially when there has been anger building up over time. I think all M's need to have their plumbing flushed out every few years to clear out the gunk before it builds up to where it clogs the drain.
All that being said, I understand if you are at the point where you are done. And I will support you decision if that is what you decide.
I wanted to add that I too have gone to other MC, Michele operates very logically - almost like a flowchart. I am an engineer/attorney so her very logical approach appealed to me - I felt like I was trying different things to test human reactions in a laboratory! LOL! My M ended as it should have - The X was an abusive personality. However, the skills I learned with her are really great when it comes to managing difficult work R's in my life.