Why child bereavement?

I already feel like a bit of a fake writing about child bereavement. All of my immediate friends and family are still with us, I don't have extensive personal or professional experience of bereavement, so why do I think I have a right to write about it, and could my written work therefore have a possible detrimental effect on its readers?
These are some of the worries I have as a writer and illustrator about my subject matter. And I'm not even entirely sure why or how I got to this subject. But as a writer and illustrator for children, my philosophy has always been that books are there to help their readers (adult or child). They never ask anything of us, they just sit on a shelf, and if we fancy it, we can pick it up and take from it what we like. But I've always thought that, therefore, a writer has a huge responsibility to produce something of high value and content - especially when it comes to a child audience, and an important subject such as grief.
So, I've certainly picked myself out a challenge for my first book! And I suppose I do feel like I have something to say (as every human being has) through my own life experience, maybe not of immense grief and bereavement, but like most people, I have experience of death, and I have experience of life and the difficulties it throws at us. What I am trying to say in my long, rambling way, is that using my own (limited) life experiences, I want to, through books, help children with life's difficult questions. One of which being, how on earth are we meant to cope and carry on after someone has left our life? Whether through death or some other life-changing event, when someone leaves us, our world can seem to collapse inwardly, and it can seem impossible to carry on, we then come to question everything around us and realise it is all temporary, there isn't anything or anyone to cling onto that will always be there. Basically, I want this book to help in the healing process of getting on with life during the grieving process, to help readers to begin to enjoy the pleasures of life once again, whilst still retaining the memories of loved ones.
I have no idea if this makes any sense to anyone other than me - but it helps to get it all down!