Yeah, I wouldn't have done that. My backpacks don't hurt me. The ones I used to have did.

Your survey was based on a bad assumption anyway. Backpacking doesn't have to hurt - you just need to find the right pack. Ain't gonna be one pack fits everyone, regardless of how you design it.
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"In the beginner's mind there are many possibilities. In the expert's mind there are few." Shunryu Suzuki

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