Hi baddancingdad, I haven't read all of the other thread, hope I'm not repeating stuff.
Every human being should be treated equally regardless of race, gender, sexuality or any other circumstance beyond their control. Every human being should be treated as an individual on the basis of their actions and decisions they make.
Yes, every human being should be treated equally. But if they are currently being treated unequally, then some seemingly unequal actions may be needed to make progress towards equality.
Fundamentally, it depends whether you think we have already reached equality: if you don't, the rest follows. If you do, then perhaps that's a whole other thread 
Male-only or male-dominated environments need to be challenged because they are elitist and perpetuate men's sense of entitlement. Women-only or dominated spaces are a fundamental requirement because they allow women space to operate and think without the oppressive nature of men.
I think it's a question of power. A women-in-politics group would give support to the underrepresented minority. If there was a profession where men were both underrepresented and faced greater obstacles and discrimination than women, then I would think it reasonable to have a men-only group, and unreasonable to have a women-only group in that profession. In society as a whole, men, white people,straight people and non-disabled people disproportionately dominate the public sphere, so oppressed-group dominated spaces are valuable to oppressed people.
-If something personal and negative is said, it is relevant who is addressing whom. If I am negative towards a woman, it is a sign of my privilege and belief that I am entitled to remind her of her place below me in the patriarchal hierarchy. If a woman says the exact same thing, it is seen as being rude by the man because he is unsettled to this challenge to his status. It is also only a drop in the ocean when compared to the millennia of abuse women have received.
Could you give an example of what "exact same thing" you mean? I'm trying to imagine the exact situation, where the same insult would be used in both directions.
Certainly insults between oppressor and oppressed aren't symmetrical. If a straight man calls a gay man a fa*ot, he is not just expressing his own anger at the gay man: he knows that that insult is effective because he has the weight of society behind him. The gay man, by that word, is reminded that whole sections of society consider his relationships disgusting or immoral, is reminded that newspaper editorials discuss how his relationship shouldn't be sanctioned by calling it a marriage, is reminded of the bullying and exclusion he may have suffered because of his sexuality. What can the gay man say in reply? I can't think of any insult for straight people, and if there is one, it will never have one hundredth of the power of "fa*ot", because it won't have all the historical and current oppression behind it.
a man's opinions and his judgement of an individual's decisions and actions - are often flawed due to his privileged position. This precludes men, to some extent, from discussion regarding human dynamics as they will naturally be prone to enforce their privilege. If I question feminism, therefore, I am seeking to continue the oppression of women.
Sort of, although I don't agree that you shouldn't question feminism - otherwise how will we be able to have a discussion? I think it's great that you're doing it here in your own thread: sometimes men questioning feminism can be disruptive if the thread is primarily aimed at supporting a woman, so obviously context is important.
Have you read a male privilege checklist yet? I think the concept of privilege can be problematic in some ways, but it's definitely something to be aware of and think about. One of the privileges is the opportunity to be unaware of your own privilege, so for example, as a white person I have the privilege to be very unlikely to be wrongly stopped by police; I also have the privilege that I don't need to be aware of police racism, the privilege that my parents didn't have to warn me about what to do if stopped when I became a teenager. My privilege meant I felt safe when I saw a police officer, and that I could assume everyone else felt safe too. Before I learnt about this, if I had seen a black person being stopped, my blindness to my own privilege would probably mean I would make an erroneous judgement about the situation: I would assume they were a criminal and that police officers were never racist. If I learnt that the person was innocent, I might come up with other explanations, because I still trusted the police - maybe they were acting suspiciously, maybe they shouldn't go out late at night, or wear those clothes. If I then started advising the person not to do those things, then I would be making their life more difficult, because my privilege had blinded me to the real nature of the problem.
Finally, are you aware of implicit bias? This is a huge huge part of the problem - that people discriminate without even realising they are doing it. This article is interesting, and you can test yourself for different biases at Project Implicit (click on "go to the demonstration tasks").
Hope some of that was useful/ interesting - I spent way too much time writing.