As a result of this thread, you will hopefully be comfortable on your next airplane trip assigned to a seat in the economy class cabin.
Who knows? Perhaps you will be more comfortable that those passengers sitting in the premium class seats!
I will admit that I was not being completely realistic in posting that last sentence. However, on the rare occasion when on an overnight flight in an economy class cabin that is not sold out, I am able to lift up the armrests of the empty seats adjacent to mine so that I may lie down and sleep with a pillow or two and a blanket or two, which cannot be done in the premium class cabin, especially if it is not equipped with lie-flat seats.