Yeah. I've probably read more classics, children's and otherwise, than most people because I love reading. I didn't say the HP books were good writing, I just said they weren't crap. They have interesting plots, fascinating characters, and a really neat world. (Incidentally they read better in British than American, especially the first two volumes)
I think they're right up there with E. Nesbit or Enid Blyton, or a few other second-tier English children's writers. Not on a level with Lewis, certainly, but who is? And to compare them to "Lord of the Rings" is just wrong since LotR is not for children.
I first read LOTR when I was 12. I found it so entrancing that I re-read them many times.
HP writing is on a scale with Nancy Drew, maybe. Nesbit was a better writer, IMO.