I'll never understand this mindset. Why, exactly,
should everyone run the latest OS? Are you afraid the Apple ecosystem will become as fragmented as Android? That's a legit question; not trying to be a smart-ass; it's the only thing I can think of.
When the SSL bug was revealed, I had a company-issued iPhone 4 running iOS6. I had purposefully chosen not to upgrade to iOS7, as the 4 didn't handle it very well. I was bummed when Apple did not patch the SSL bug in iOS6 for the iPhone 4; if I wanted a secure OS for that phone, I was
forced to go to iOS7. I found that incredibly disappointing.
When I went to other, Apple-related forums (not this one) to ask questions, trying to understand why Apple would do that, more often than not, the response I got was almost nearly identical to SMIDG3T's response above, with a healthy side dish of implied "please shut the ******* up" to go with it. It was as if I was committing some social
faux pas by merely asking the question.

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I disagree with you. I think his comment was well-stated, and didn't get the same vibes from it that you did.