I'm going to start this post by saying that I'm not a corsair fanboy.
That being said, I challenge you to google any popular product from basically any manufacturer with the conditions "failure," "dead," "broken," "RMA," etc and not find virtually the same experiences that you are going though.
I'm serious. What other peripherals do you use? Logitech? Razer? Steelseries? What would you consider "well made" components? A lot of people regard the logitech G5/G500 highly but there are equal horror stories with virtually everything that exists in the market. Razor has it's own huge share of complaints. There are stories from all of them with multiple RMA'd products breaking after very short periods of time. I've personally RMA'd multiple logitech mice, gone through tons of headsets of various makes/models but that doesn't mean that I instantly blame logitech QA.
You always hear the bad stories, and for good reason. People spend a lot of money on these products and yeah, it really sucks when they don't work correctly or break. But you have to remember that you are always going to hear the bad stories, and you can't assume that those bad stories don't happen with other companies as well.
I really don't wanna start a pointless internet fight so I probably won't respond again, but I really just think that people tunnel vision way too much when it comes to things like this. The grass is always greener on the other side, at least until you find yourself in the support forums of that other side, because the stories are always the same. I dare someone to find a support forum with nothing but praises of the company. They don't exist because support forums exist for the sole reason of giving support for broken products, plain and simple.