Harry Potter sorrow!!

I finished reading the Half blood prince last evening, I found myself sobbing through the last 40 pages!! I cant believe he is really dead!! I am not sure now that I really want to read the 7th and last book, whats the point when the most powerful wizard in the wizarding community is gone. Was this really a kids book? I would be pretty traumatized hearing or reading this book if I was a kid, I am 32 and I had a very disturbed sleep last night!!, yeah yeah its just a book...