Crayon on the Wall and I don't care!

So my son is very artistic. He has crayons. Many, many, many crayons. Also chalk. I have beautiful white walls. A perfect canvas for a creative little dude with a nack for drawing circles. Do I care? NOPE!! I LOVE the fact that my son can draw to his little hearts desire on a surface that easily wipes clean with water and a rag and a teeny bit of elbow grease. Sometimes I draw on the walls with him. Daddy also draws on the walls with him. I think its adorable. Many of my friends are "shocked" and say "you are so relaxed!". Basically they think I am nuts. Haha. He knows not to draw anywhere but our house though, he's never tried drawing on walls at anyone else's house. I will say the time he got a hold of the brown crayon and drew what looked like poo piles all over wasn't too pretty. HA! I like the blues and greens and purples that adorn my walls right this moment better.