If you ever took a Child Evangelism course, you'd know that 70% of children that will accept Christ, do it by age 13. After that, it is a huge drop off. So yeah, the issue does matter for Christians.
Oh, I know, it's just so horrible! We're all going to BURN IN HEEEEEEIILLLLL!! Fire! Flame! Burn! Eternity!
You cared about Santa more than you cared about me, Little Johnny, so I'm going to throw you into a SEA OF FLAME UNTIL THE END OF TIIIIIMMMMEEEE, because I'm jealous, and I can't handle it!
MERRY CHRISTMAS, EBENEEZER!