Is it worth paying a lot for a backpack? I love a good backpack, still it seems like a bag with straps to me, help sincerely requested

I'm firmly in the "no" camp, although I did find the $35 backpack I bought in 2016 lasted ≥5x longer than the $30 one I bought the year before. (I paid quite a bit more for one for multi-day backpacking trips, though, but that doesn't sound like the topic here.)