I do like JK Rowling, not only for what she has done for children's literature but also for her philanthropy. I think she's an admirable human being and am appalled at the amount of hate that has come her way for expressing her opinion, which we are all entitled to.
I look back with affection at the Harry Potter years, I picked up her first two books in Waterstones when they were on promotion before all the furore surrounding them kicked in for the children to read on holiday. At the time I had no idea who she was and what would come down the line as to their overwhelming success. Read them they did on that holiday,
my not so mad about books son like many others devoured the whole series, I think my "reader" son liked them but preferred the His Dark Materials series. I don't think we can under estimate how she captured the imagination of a generation and as others have pointed out, engaged so many boys who were not too enthusiastic about books.
I think her trio of child actors have behaved quite shabbily towards her, having seen all of them in more adult material post Harry Potter, I'm not sure they are that great at what they do, although that is a matter of opinion, but do wonder if they would have become as successful and rich as they have done without that almighty leg up from the Harry Potter films.
In our house, we love the Robert Gailbraiths as well and those are a testament to her versatility as a writer.