Why do so many people lie to their children about Santa Claus?

I'd rather be a "grinch" than deny children a sense of reality and trust in others. I remember vividly how stressful it was for me when I was asking skeptical questions about Santa and my mom and other adults kept lying and lying. It's cruel to teach your children that it is normal to tell enormous lies to people you love. The innocence of youth is precious; it should not be toyed with, but respected and protected so that faith and love and trust can take firm root. Next time your "beautiful children" lie to you, count yourself to blame because you are modeling that behavior for them. You are teaching them that powerful people (you are the adult and the parent, after all) manipulate and trick people for no good reason at all; it's just plain fun to make others look and feel stupid for being trusting. This lesson will break and scar their young hearts, and it will quite likely make them disloyal, like you are.

It's even worse when self-proclaiming Christians lie about Santa Claus because lying is a sin.

Proverbs 6:16-19
16 These six things doth the Lord hate: yea, seven are an abomination unto him:

17 A proud look, a LYING tongue, and hands that shed innocent blood,

18 An heart that deviseth wicked imaginations, feet that be swift in running to mischief,

19 A false witness that speaketh LIES, and he that soweth discord among brethren

Revelation 21:8
But the fearful, and unbelieving, and the abominable, and murderers, and whoremongers, and sorcerers, and idolaters, and ALL LIARS, shall have their part in the lake which burneth with fire and brimstone: which is the second death.