Letting Someone Down

When you have to be the one to end childhood beliefs it kind of stinks.  I am the grandma and I shouldn't have to be the one to keep up appearances for holiday beliefs.  I have been there and done that and now I just want to be the grandma. How old is old enough anyway for a child to not believe in Santa or the Easter Bunny or even the Tooth Fairy for goodness sake.  I don't remember anyone ever actually telling me the truth; I just figured it out but didn't make a big deal about it.  I have never been able to actually say to my own kids that there is no Santa etc and I don't want to actually say it to my grandson but it is hard to come up with other ways to let him know that he should let it go and lately my tongue just wants to let loose. I will just have to stay busy to avoid saying anything that I will regret.