This may answer your question
Side effect of AIDS
Bah, cheapskates. We have to suffer so that they their planes can last longer.
Global Warming people!!!
Would you prefer the plane getting you half way there and having to swim the rest?
I'd prefer them being designed to withstand the increased pressure gradients like spacecraft have being doing for the past 50 years. That or just flying at lower altitudes.
But that would mean increasing costs