1. You know what you're getting into.
They all follow the same basic plot line and we couldn't love them more for it. The plot will follow a christmas hating female protagonist is put up against a holiday spirited family when she runs into a jolly ex-flame who re-ignites her lost Christmas joy, or a protagonist sent from Santa to execute a mission of bringing Christmas happiness back to corporate America.
2. The familiar tunes.
Mariah Carey's classic tune has nothing on the array of Christmas throwbacks seen in these mediocre holiday films. In these films you get ALL the former stars desperate Christmas albums. No one from 'Nsync to Britney Spears is except from plaguing the joyous films for all eternity.
3. The familiar C-list actors.
You know it's the holiday season when you start to see Hallmark ads for movies with one actress you've definitely seen before... well maybe. Gosh, where is she from again. Oh wait was she one of the daughters on Full House? No. Well she looks just like her. I could've sworn she was.
4. There's a never-ending supply.
Knowing that these movies can be binge-watched for days on end will always supply a familiar sense of comfort. You can revisit the different film adaptions of the "Grinch" plot-line over and over... and over again. Uh-oh, better make time between Thanksgiving and Christmas to cram them all in.
5. Family/Friend quality time.
Nothing bonds estranged family member like being unable to tear your eyes away from a borderline terrible movie. You complain to each other throughout the duration of the film and complain about being unable to stop watching. You discuss the repetitive plot, lack of character development, and wonder why so many proposals pop up out of nowhere. You end up wondering if you should start a film critiquing website. The true meaning of family.