Well first of all, I have no idea who Jade Goody is.
And as for her children, I don't really have a problem with keeping young children away from funerals. I was in 5th grade when my grandfather died and my parents didn't allow us kids to go to the funeral, and I don't think I suffered any ill effects from that.
To be honest, I'm not very good at funerals. I don't face death very well at all, and even though I loved my own father, who died when I was in my early 20's, I was absolutely terrified at his funeral. I simply could not face his death and never even looked at his coffin - from the time the back door of the hearse opened up, I just looked out across the cemetery in the other direction and pretended with all my might that I was somewhere else. I'm sure to others at the funeral I looked like I didn't care at all - my mother went to pieces and fell all over the coffin (I saw this happening in my peripheral vision and it sent me into total panic inside, though on the outside I never flinched), my brother and sister cried (they were sitting beside me and I could hear them). And all the while, I sat there like a rock. I didn't cry. I didn't move. I just detached myself from the entire event and pretended it wasn't happening.
I dealt with his death, but in my own way over the next few months. Coming face to face with it - up close and personal (especially since it was unexpected and he was only 62) just put me on overload and I went into denial.
So - do I have a problem with keeping kids away from a funeral? Not in the slightest. Different people react to the death of a loved one in different ways - some need to mourn up close and personal, some (like me) need to sort of 'warm up to the idea' of the person being gone over a period of time. And I think little kids shouldn't have to be put in a position that I was in at 22 - forcing myself into denial.