Let me preface this by saying I went through all 100+ pages. I really don't know where to start or where to end and surely I have nothing new to add to the conversation that hasn't been already said by my fellow forumites.
As my post count may show,I am not a frequent poster but I have been lurking logged in and not logged in for almost 3 years, ever since I discovered and fell madly in love with the Mass Effect universe, and subsequently Dragon Age.So I am one of the recently made fans or Bioware games.
This news about the forums closing has been crushing and sad for me.I can only imagine what it must feel for people who have been posting on BW forums since the beginning. I regret that I didn't participate more and regret I didn't get to know you guys and I am sad I no longer have this idea to look forward to.
Mass Effect as a franchise is of very personal importance to me because they were the games that got me into gaming even at the later age of 22 .They made gaming a dear hobbie and way of life in a time when I had no interests and nothing to be passionate about. It motivated me to do things and even take up volunteer writing news at a gaming website in my country.My personal life later changed in many ways for the better,all because I rediscovered gaming. I found something I loved doing even though it alienated me from most people I knew.(being a gamer and a girl and having friends who are mostly girls and don't game is hard, I still get teased at sometimes for my "nerdy hobbies" but who cares.I am at peace. )
Anyway, I don't wish to be a bore.I want to say is that BSN /Bioware Forums are to thank. Without this place I wouldn't have fallen so in love with ME and DA despite their flaws. I wouldn't have learnt so much about my favourite characters and lore. I wouldn't have read tips on how to play and best enjoy the games.
This is the place where since would find funny posts and awesome art. This is the place where I could dig up and read a super long ,6 year old thread and read about Zevran
.This is the place where I could read contructive criticism (and not only ) about the errors of Bioware 's ways without sugar coating.The place where I could mourn the abandonment of Shepard & Squad and the entire Milky Way Galaxy. Soon this place will be lost and erased as if it never existed. This place which made me a fan.
Bioware 's decision is wrong on so many level, insulting and almost... hostile. I will never understand their reasoning, since it was clearly stated by Conal that it is not financial. This will comeback and haunt them because these sort of marketing moves are the ones that poison a good relationship between client and customer. The trust is gone. I used to respect Bioware and now it's just apathy. They made me lose excitement over the release of the next installment of my favourite game series. That tells something. I am not dooming MEA. I might end up loving the hell out of it, heck I even loved Dragon Age 2 .But Bioware? I don't know what to think of them anymore.
All the time I spent here, all the money spent on supporting then by buying merch, the hell I went through to travel across the world to see them at Cons, meet other fans and meet voice actors from their games and this is the thank you...
Part of me begs BW to reconsider but at the same time puling a sudden 180, changing their decision only to show themselves as heros who "listen to and care for the fans" somehow will feel more insulting.
Anyway, I m not on Facebook, Twitter I don't like, Tumblr I can't even...I may force myself to use Reddit or try the fan forums mentioned here. Either way, Bioware won't hear my feedback.
Good Luck and big hugs to all 
Edit: Sorry for any mistakes. English is not my first language and I am writing from my phone.
I totally agree with you. As a long time loyal fan and staunch defender, I really do feel betrayed. It is not just the closure of the forum, it was the rationale given - it seemed so disingenuous and thus so disrespectful. That is what hurts the most.
I would have preferred them to tell us the truth which appears to be that it has become time consuming for them to manage the forums and the negativity of the small % of trolls and flame-throwers is offensive to them.
It seems like Bioware operates under a philosophy of we rule by exception therefore we punish all for the transgressions of a few!
Given that Bioware does not frequent the board it is clear that they do not understand the legions of fans and the promotional value of the forum - this translates into dollars to line the Bioware coffers and help them to produce wonderful games..... I don't know why they want to risk the good will and the buying power of their loyal fans... it boggles the mind.
I hope Bioware re-considers. I can't bring myself to return to my 12th DA:I playthrough and my excitement over ME:A has dropped 1000 fold. I hope they at least issue an apology - something. Tell us the truth.