I found your comments around family gatherings interesting. You asked something about why people need holidays for an excuse to gather.
I was talking to my wife over the weekend about how it is strange that family members that aren't "living right" are welcomed around holidays. For example, I had a family member that was heavily addicted to opioids that had no interest in being around family, and the family had no interest being around her. In the name of Christmas, they invited her to the dinner. As a result, her kids saw her in a comatose state. Not only are people accepting of a tradition that is sinful, they accept sinful behavior that they normally would not.