Where has this Christmas song been and how did I miss it?

Last Christmas by Wham. I heard this Christmas song for the very first time today. I have played it about 10 times. I love the words and I love the drum beat. This is rare for me to say for a song that I believe was recorded in the 80s? I thought good music had been forgotten, but not this song. I see it has been covered by at least 100 other singers and now I know why. Question: have I been out to lunch for the past few years and somehow missed this Christmas song? I intend on adding it to my frequently played list. This sounds like a song that Kool and The Gang should have recorded.