Why were there so many christmas records in the old days?

whenever i go to goodwill there's dozens of random, arcane old records from the 50s, many being chrismas compilations. i cannot emphasize enough how many christmas records. why?

why christmas? there are other cool holidays. why so many at goodwills? elvis did a bunch. why? why? who cares about christmas that much? i assume society was more traditional and non secular back then, but still, there's always just a staggering amount