If I would have liked it as a kid, lots of other kids that would grow into sensible adults would too.
I hate the idea that these could become a popular set of books for people not yet ready for the intricacies of Frank's work. Why so much? Because My order of reading Dune books was thus:
Dune
Snippets of GEoD and CH:D, because they were there and I couldn't resist taking a little look...
Children of Dune (found it at a garage sale, couldn't resist plunging right into it)
Dune Messiah
House Atreides (OH NO! Well, I liked it for about half of it's length because it seemed like it was giving me some answers to questions I had, but bit by bit it dawned on me that things were amiss. I bought that at a bookstore too, so it supported the new writers

House Harkonnen (got this one at a used bookstore, so that was ok. I was still hoping things would get better)
House Corrino (well, I had to finish. I just read this at Borders and never bought it)
The second trilogy
The sequels (couldn't resist, needed to see whether it might have improved by being supposedly based on an extensive outline by FH, read these at Borders).
Never read any other "dune" books and don't intend on it.
So I read the house series before the second three FH novels. That means:
- tleilaxu religion was completely spoilered for me
- axolotl tanks spoilered
These were terrific surprises for most people, right? It seems like they would have been. They weren't for me. I was just left wondering why the decided to use this information in a series they surely wanted people to read before Dune.
So, the prequels actually lessened my enjoyment of Frank's books. That is what rankles. And it could only be made worse by actually reading the books in chronological order.