They have an innocence that it is so far untouched that they don't see bad things or bad people or any sort of evil in the world.
I have often heard my older children say I wish I was fours years old again and I understand why. I wish I was at times. The reasons really are quite simple.
There are no worries, whether it be emotional, work, school, relationships or money. When you are four, life is just one huge playground. You have these two big people (mum and dad) catering to your every whim. You can order them around to get whatever you want when you want it. This is perfect, an ideal life without actually having to put much effort in yourself!