Barbeques- usually takes place in someone's backyard with family or friends gathered around a pit or grill with flaming charcoal that cooks meat. Attendees enjoy the festive atmosphere because it's an ingrained remnant of their prehistoric past when early humans killed and ate animals in the wild. Some those feasts were also rituals featuring human sacrifices atop an alter somewhat resembling a modern stone barbeque pit. The killing of humans stopped because humans were needed to prepare and cook the food, then clean up the mess afterward.
Meat that is cooked on a barbeque grill is extremely carcinogenic, yet people continue to gorge themselves because they think they like it. The primal idea in their mind tells them they like it, but their bodies don't like it because it gives them cancer. Besides the ceremonial aspect of the event, the warmth generated by the fire has a comforting physical effect, and the smoke masks the guilt psychological associated with the sacrificial offering of human and other innocent animals.