Most of society functions through subtle, subconscious persuasion: the need to mirror the tribe’s emotional state.
When a boss is stressed, the social contract dictates that you must absorb that anxiety; when a friend is joyous, you are expected to reflect that happiness.
This amplification of energy is the "human glue" that solidifies our bonds. By shouldering the load or sharing the celebration, your participation validates the group, ensuring your place within it.
To reject this pressure—to remain calm in the face of another’s stress or indifferent to their joy—is a lack of compassion. While emotional autonomy might be healthy, it results in exclusion from the support network, trading communal friction for isolated solitude.