That's not correct. I am one of the biggest Tolkien nerds there is....period and I can tell you that it was the inconsistencies that arose over the years of his writing (Which Chris worked with him on). This lead to an almost unimaginable scope of work that his son finally tackled. Chris grew up listening to and understanding his father's tales; even helping with editing. He was, quite literally, the only person on earth who could have taken on this enormous task. Of course, we should all be grateful to JRR Tolkien, but we should never underestimate Chris' contribution to bringing his father's world to the public.
In addition, Tolkien didn't create his world so he could write "fun" books. He wrote it as a linguistic and historical work. Read the forward in, at least most, of his publications of 'The Lord of the Rings".
While not liking the posthumous writings or liking them less is a matter of taste, the contributions of, and hence my gratitude to, Chris are immense.
If you'd like to check out my collection of Tolkien's works, they are on my website. I've since added an original Easton press printing of "The Children of Hurin" *(Narn I Hin Hurin) to my collection. When Easton re-released it, the originals became affordable. Since you liked The Hobbit, you might be interested in checking out the copies I own. I have a very interesting edition in there.