Interesting. Thanks for sharing your unfortunate experience. Although this thread does concern the 2011 models, and, by way of the repair extension program, 2012-2013 models as well, it is disheartening to learn that your 2014 MBP seems to suffer from similar problems.
I don't want to dwell on the why's and wherefore's of Apple Care. Repairs are never free, not even those performed under guarantee. They are either included in the purchase price, covered by a separate product like Apple Care, or must be paid, either by the customer or, if the manufacturer is at fault, by him. The thinness with which Apple is so infatuated comes at the price of these products' presently or soon consisting of nothing more than screens, keyboards, motherboards and batteries; the new 12" MacBook even lacks fans. Any hardware problem is thus simpler to localize but requires replacing a major portion of the machine. For all these reasons, -- and because, up until my last Mac, a late 2011 MBP 17", I had always tried to sell them after two years, the remaining year of guarantee being a strong incentive for Windows aficionados to indulge their curiosity, -- I have always purchased Apple Care for my Macs.
It is difficult to judge whether Apple is producing increasingly less reliable products, as you suggest. A sample size of one, namely one's own personal experience, is never statistically representative, nor are the experiences related in such forums, which tend to attract chiefly people who have problems (with Apple products, I mean). What is clear, and not just since the announcement of the Apple Watch, is that Apple is increasingly attracting fashion-conscious customers, and this is certainly not unintentional. That does mean, however, that a higher proportion of the price of a product is related to design than before, while product longevity becomes less important for customers who feel compelled to "change their wardrobe with the seasons." The watershed product in this regard was certainly the first 15" MBP Retina, released simultaneously with a slightly upgraded 15" MBP Unibody. Although the Retina model lacked an optical drive, the market evidently voted with its dollars, Euros, Yen, etc. for sleekness over utility, and Apple never turned back, eventually even axing 17" laptops.
There is a reason that Apple still has competitors, and that is because they offer alternatives. Their products are, economically speaking, no cheaper and no better. You get what you pay for, and nothing is free. If the areas is which they have made their compromises are less important to you than the areas in which Apple have made theirs, then your choice must be clear. One aspect of Apple that I value is the Genius Bar. I can make an appointment, take my product in, have somebody diagnose the problem and give me a cost estimate for repairs. With other brands, I have to take it back to a retail store, typically a large consumer electronics chain, that sends it to the manufacturer. Nobody can tell me what will be done and how much it will cost. Usually I have to pay for a cost estimate, which will be applied toward the cost of repair if I then choose to have it repaired. Clearly, others will place less value on the Genius Bar than I do, but it, too, is somewhere in the cost of every Apple product.