@elchoopanebre: They tacked what onto a what? How was Christmas (literally Christ’s Mass) a secular holiday? And if you think it was put there to overshadow Saturnalia, it’s still about the temple for Saturn so…
It’s been commercialized over the years, definitely. Same as Halloween. But I don’t think it was ever a secular holiday. And by “I don’t think” I actually mean “it’s always been religious”.
ETA: Unless you mean winter solstice in which case, same as Saturnalia, it was totally all about conversion, not consumerism which didn’t really exist then anyway.