Not really true. Most major releases of iOS will fix any slownesses by a couple of fix releases within weeks. Not a single iOS release has made earlier devices "unusable." If the device cannot use the update, it simply will not install. Your 3Gs was an aberration that was fixed in a later release. For your Safari issues, have you tried restoring to factory and then re-synching your data?Swordmaker, all you really do with posts like this is prove you're an unrepentant Apple fanboy. I SAW the behavior I described with my iPhone. I have friends that saw it, and that experienced the exact same thing with their iPhones. The iPad Air I own *still* has all these issues, all of which started with an iOS release quite some time ago. I have even posted a video of one of the major issues in Safari - one which it still does to this day.
Not sure what your attachment is to Apple - financial, work, or just some bizarre religion - but you've completely blown any and all credibility with this post.
I do not know what your problem is with YOUR iPad Air. I know I did not have such a problem and i know that others do not have such problems. Have you upgraded your iPad Air beyond the version of iOS that gave you problems. I seem to recall you saying you would not accept any more updates because they caused problems. If that is so, you are the problem, not Apple, because Apple does fix problems.
I provided you several possible fixes for your problem and you merely attack me. I tried before when you brought up these same issues. You don't describe what these problems are you complain about, just complain. I do not have "problems" with these devices and I work with such devices day in, and day out, in my work. Why YOU do, I do not know. Perhaps you have a defective device. Anecdotes do not make data. They are a single data point in data.
Perhaps if you were to more fully describe WHAT your Safari is doing on your iPad instead of just complaining about "all these issues" you *still* have, the Apple users on here could tell you exactly what is happening and perhaps help you fix them. . . but just telling us you SAW something doesn't help you or us understand what you are saying.