I don't know if I'll even bother this year. Their puzzles start feeling like chores by the 10th problem or so and I drop out. Maybe I'll learn a new language to spice it up this year.
I'm using this year's to dust off my Rust skills in advance of a new job using that language, so that's nice too.
That they get so involved is the reason I participate (despite also working at the same time). I love the fact that the difficulty starts low and then goes up to levels where I feel really challenged. It's a month (well, 25 days) commitment which pays off the entire 11 other months for me :)
Advent of chore ? :)
..though I agree - never went past 10th day or so.