Just recognize that (I'm going to go out on a limb here and assume) that, because you are a middle class white man, probably 90% of the reason you oppose "affirmative action" is because it negatively impacts your own demographic group.
Arguments for or against AA aside, this line of reasoning, where you invalidate somebody's argument based on what demographic group they belong to (white middle class males in this case), really seems like a simple ad hominem argument. You're no longer addressing what is said - only who is saying it.
Sigh... First: that's not a logical argument, it's a message directly to the poster (and anyone like-minded, probably including you) intended to provoke introspection. Read it again, I don't claim anything in those words says anything about AA.
Second: you seriously think it's inappropriate to point out that people tend to have opinions which advantage their own station? Really? You're not simply saying that this is incorrect, you're actually saying that I'm not allowed to make the argument that white people might not like AA because it disadvantages white people. That's insane, sorry.
I agree that affirmative action is a good thing, but I thought it was a quite interesting discussion we were having.
Let's go back to the original topic at hand and refrain from derailing the discussion with personal messages directly to the poster and those like-minded.
A good argument is not solely made up of logical arguments, but it does not sacrifice logic for pathos. If your argument is sound you should be able to defend it both logically and emotionally.
Arguments for or against AA aside, this line of reasoning, where you invalidate somebody's argument based on what demographic group they belong to (white middle class males in this case), really seems like a simple ad hominem argument. You're no longer addressing what is said - only who is saying it.