Then you don't understand how the Lightning connector works.
With the 30 pin each pin could only do one job. If that pin was damaged you lose that function. Rather major issue if it was the pins for say syncing or charging.
With a Lightning connector the pins can do any task and are assigned as needed. So one pin gets damaged the rest pick up the slack.
That's cool but they could've made a 30-pin 2.0 that had the same functionality when used with 30-pin 2.0 devices. But it would still have been backwards compatible to 30-pin 1.0.
I am a huge fan of fault-tolerant designs, redundancy, reliability. I'm not criticizing Lightning as a general concept. Had 30-pin never existed, I'd be all about Lightning. If Lightning-to-30-pin adapters were 100% compatible with all Apple stuff and all third-party stuff, I wouldn't be here posting this. If Apple worked better with their third-party hardware MFI developers, you would see a lot more Lightning-native stuff on the market.
But Apple's attitude seems to be, "We don't really care what our customers or third-party partners think or feel. We're going to make the device however we deem is best, regardless of how that meets the needs of our users, because obviously users will realize afterwards they only need what we give them, since we know best."
And if that kind of innovation is a problem for you because you don't like that Apple never promised to keep things the same so you don't have to buy new accessories then perhaps you need to consider leaving Apple as a customer.
You're right they didn't promise anything, but then again, it's their own funeral. Look at the drop in profits and market share they are experiencing. You're deluding yourself if you think this attitude of Apple's (the "our way or the highway" attitude) is not costing them marketshare.
If I went to a restaurant and found out they were no longer serving my favorite dish there, and served me some new thing that wasn't as good, then I might complain. And if when I complained they told me that I should consider never coming back to their restaurant, guess what I'd do.
Most customers do not care about Apple. If they buy Apple's products it's because they've found them to be the best ones on the market. If they feel hosed by Apple or screwed over in any way, then as soon as they have the chance, they jump ship. The Android and Windows camps are loving it; they are constantly going after all the areas Apple is falling short on, and just taking in defector after defector.
This "our way or the highway" attitude is costing Apple a ton of business and growth. Any customers who feel "screwed over" by moves like Lightning will not only leave Apple but likely tell all their friends to get Android as well. Many have already left Apple as customers.
Nothing Apple does should be designed to alienate its loyal customers. It should do everything possible to retain customers, not lose them. If I was a manager at Apple, and I detected this sort of arrogant attitude amongst my staff, I'd fire them on the spot, and find engineers who understand that catering to customers' needs and desires is the most important thing.
People buy products to get a solution to a problem. The more of their problems you can solve with a single solution, the more they will love that product. However if that product creates problems for them, they will be less likely to keep it, let alone recommend it to others. It's simple, really.
Innovation is when you create a product that solves new problems and therefore creates a new market and creates new customers. I don't really view Lightning as innovative at all; it does not seem to me that it has expanded the market for the iPhone, and meanwhile, it has reduced the MFI hardware market and alienated some customers. What new customers are brought into the fold by Lightning, who would not have bought an iPhone if it still had the 30-pin connector? Is there anyone who would refuse to buy an iPhone if Lightning ports had never existed? Any of Lightning's advantages are vastly outweighed by its disadvantages, which kills any way in which it might be seen as innovative.
Worse, it's not like they got rid of 30-pin; it's just not built into the phone anymore. You still have to take this stupid $39 adapter with you everywhere if you want to use any of the multitude of accessories that still do not have Lightning versions, or if you want to avoid buying a ton of new USB cables, etc.
I did not get a slimmer phone so I would be forced to keep track of a tiny, expensive accessory cable that could easily get lost. What's the point of a slimmer phone if you then have to carry around an adapter? Not slimmer anymore.
At least with the MacBook Pro, Apple recognized that they had better offer a version that has an optical drive in it, since millions of people still use optical media on a regular basis, despite the skewed bubble perceptions of all of you technogeeks that hang out on Macrumors forums.
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Not sturdier. 30-pin has fragile pins inside. Thus the name. Lightning has no fragile parts and all connectors are exposed and flush with the plug.
I never had a single issue with 30-pin connectors over the years. And I use my stuff pretty hard. I doubt it was just "luck." At any rate, I'd rather replace an occasional broken cable, than have to risk my phone becoming disconnected from my MIDI adapter during a performance because the plug doesn't lock into place, and the 0.2m adapter cable (the only kind that works without removing the case from the phone) leaves the MIDI adapter dangling off into space.