WHY AREN'T THERE MORE THANKSGIVING MOVIES?

I haven't seen many of these, or it's been a long time. Is it me, or are most of these really depressing movies? *Disclaimer* No need to add A Charlie Brown Thanksgiving, dig deeper.
  1. A Myth Of Fingerprints
  2. Pieces Of April
  3. Avalon
  4. Planes, Trains & Automobiles
  5. Home For The Holidays
  6. The Ice Storm
  7. The War At Home
  8. She's Gotta Have It
  9. The House Of Yes
  10. Son In Law
  11. Dan in Real Life
    Am I remembering that correctly?
    Suggested by   @SarahJane
  12. Stuck in Love
    Not a strictly thanksgiving movie but takes place over the span of a year between two Thanksgivings (great soundtrack & on Netflix)
    Suggested by   @kate81