(CNN) Decades ago, airline travel was considered a glamorous and exciting mode of transport, reserved for the rich and elite. Yet while flying has become more democratic and affordable, industry research shows that people increasingly dislike it.

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The belief that air passengers simply don't realize how good they have it is growing -- and not just among industry advocates, where one would expect it, but also from industry share analysts and some economists.

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It's all about perception

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Passengers are still flying and travel demand is growing, showing that despite service quality declines, they're still willing to fly and at unit distance prices that are still historically low.