You've bought into what they want you too hook, line, and sinker. You're the perfect employee because you're operating under the assumption that your company has it's employee's best interests in mind, because you're all a big family who pull together to get through the tough shit the world throws at you.

The company doesn't care about you at all. You guys are resources and what's best for the company is to squeeze as much value out of you as possible. They tell you "if someone doesn't get their extra tasks done everyone has to pick up the slack" to hide the fact that in a job, there are no extra tasks. You are selling your time and labor at a fixed rate. If you allow extra tasks to slip into your routine you are working for free and being exploited by your employer, to their gain. They love it when you think it's a shared responsibility between you and your coworkers because you don't want to let each other down, it's free motivation for you all to work for free. It's crazy. Don't fall I to that trap.