why do we celebrate halloween

Halloween is celebrated as a tradition that originated from the ancient Celtic festival called Samhain, which marked the end of summer and the harvest season around October 31st. It was believed that on this night, the barrier between the living world and the spirit world became thin, allowing spirits to return to Earth. People lit bonfires, wore costumes to ward off evil spirits, and left offerings for friendly spirits. The celebration evolved over time, with November 1st becoming All Saints' Day in Christian tradition, and the night before was called All Hallows' Eve, later shortened to Halloween. Today, it is largely a secular holiday focused on costumes, trick-or-treating, and spooky fun, blending ancient customs with modern playful festivities.