Many people seem unwilling to admit what they do is bullshit. Not judging that at all, virtually most jobs are bullshit, I've done far more useless things for big companies earning good money too. Yeah it offers entertainment value but were it to disappear humanity would not suffer for it.
I'm honestly amazed at the number of people who truly believe what they do offers value, long lasting, real value to society. Have quite a few friends in advertising/marketing and they've drunk the kool-aid thinking that because they bring in X amount for bigcorp their existence is justified and if they didn't someone else would. Without this delusion it's likely not an easy thing to live with.