Is Bargain a human Trait?

Who does 100% of what you ask?

No matter what it costs you, they shall do only 20% of what you ask; when it makes no difference to them.
When it is a mutual concern they do 80% of what you say.
When it is an obligation they do 100% what you say.
But when they need, they expect 110% leading to anger and frustration.

Each of us have been in in all the above onetime or the other. Yet, we are so indifferent and keep struggling in the same cycle.