... ummm ... because airlines are critical component of the logistical structure that underpins our global economy.
And, even if people are not all doing well individually, compared to any other moment in history, we've still got the incredible privilege to be living at a time that has seen us more prosperous than ever before.
Even if poverty still exists and is still horrible - even with austerity - being poor in 2020 is nothing like being poor in Dickensian London would have been.
I, for one, happen to think this level of well-being is worth protecting.
Now, that isn't to say "every airline everywhere" needs to be saved - of course not!
But on the whole, our travel and logistics infrastructures, big tech, etc. are the drivers behind why we're, compared to earlier times and many places around the globe still, doing well.
In conclusion: your "I'm alright, Jack" attitude is painfully naive!