Answer: An overpowering love for great cinema - which this year has included plenty of varied fare including The Green Knight, King Richard, Spencer, The Card Counter, Last Night in Soho, Petite Maman, Dune, The French Dispatch, Annette, Our Ladies, Herself, Censor, The Courier, Stillwater, Zola, Another Round, First Cow, In the Earth, Nobody, Sound of Metal, Dream Horse, Nomadland, Judas and the Black Messiah, and several others that 1) aren't just cynical sequels and 2) hugely benefit from being seen in the cinema.
Television didn't kill cinema. VHS didn't kill cinema. DVD/Blu Ray didn't kill cinema. Home cinema didn't kill cinema. High resolution TV didn't kill cinema. Disruptive idiots with mobile phones didn't kill cinema. Nor will streaming kill cinema. Nothing will.
There will always be old-school die hards - far more than many people realise - like me who try to see as much as humanly possible in the cinema (I go two or three times per week, and have for decades). Why? Because over a hundred years later, it is still the best way to see a film.