Sure, healthy and happy chickens are nice, but if you are into industrial farming and your goal is to make money, you will make their life as miserable as necessary to extract profit. You don't care if they are barely alive as long as the health standards are met.

It's not about you being happy as an individual, it's about the company making money. If your lawyers and sales are good enough to build a captive market of miserable customers, your company can still make a ton of money and be very successful.