When we become too old or too large to be carried and coddled by our parents like we were when we were infants and toddlers, an emotional deficit is created in our brains, and we habitually find a solution that will stimulate an appropriate amount of dopamine to make up the difference. It's easy to create fictional parents and convince ourselves that these fictional parents will always love and protect us forever and ever, in the absence or simply the small distance of our real parents.
Institutions long ago, I mean thousands of years ago, figured out how to capitalize on Transferrence. They organized a strategy that would cause you to transfer to their care, the rituals and symbols necessary to trigger your infantile emotional responses, thus making you dependent upon them for emotional well-being.
These institutions also capitalized on the human tendency for Projection. The use of projection is instrumental to the vilification of anyone not a close-knit member to your group. One example is the War on Christmas. Christians claim it's their holiday, when in fact, the holiday is really the celebration of the coming longer days that precede Spring, "Dies Natalis Solis Invicti," meaning "the birthday of the unconquered sun." The Christians took over the holiday and called it Christmas. They claimed that Christ was born around that time, which they can't prove definitively happened at that time, if at all.
It's the same situation with Easter which marks the Spring Equinox. Most Christian holidays simply coincide on important seasonal changes that affect everyone else too, but they have co-opted the holidays and continue to attempt to socially exclude others by placing their nativity scenes on government property, and complaining about shopping centers that won't decorate with Christian symbols and phrases like "Merry Christmas" instead of "Happy Holidays."