Why do most restaurants use an unhealthy amount of salt in the food they serve? I'm talking three to five times as much salt as the typical home chef might use.
For the same reason that lazy marketers spam people and unsophisticated comic book writers use exclamation points.
1. Because it works (for a while).
Salt is a cheap and reliable way to persuade people that the food is tasty. Over time, it merely makes us ill, but in the moment, it amplifies the flavors. It's way cheaper than using herbs or technique.
And that's why marketers under pressure push the limits in terms of spamming people or offering urgent discounts. And why Batman is so easily caricatured with the word: POW!
Cheap thrills. Shortcuts. Lazy.
2. Because they've been desensitized.
Cook with enough salt long enough, and nothing tastes salty after a while. And so the lazy shortcut becomes more than a habit, because it's not even noticed.
And so the marketer figures that everyone is used to being treated this way, so he ups the ante. And the other marketers around him are used to it too, so no one says anything.
The solution to all of these problems is to zero out. Play for the long haul. Take the more difficult route. Surround yourself with people who insist you avoid the shortcut.
Back to the basic principles, so you can learn to cook again.