Apparently this is one of those love it or hate it books... from the reviews there seems to be no middle ground. The artwork in it is quite good, even if some find the mom rocking her grown son to be creepy and gross instead of hilarious... as I think it was intended.
I think anyone who has a problem with this book either has mother-in-law problems or a son who could never be good enough. Either way I think it is their problem. This is the first time I have ever read a bad review of this book.
I think that's kind of a rude assumption. Lots of people love this book because they see it as a parable about a mother's unending love. About one fourth of the people who have reviewed the book, however, have been disturbed by the literal image of the woman "crawling across the floor" to get into bed with her grown son while he is sleeping. Making rude assumptions about their psychological state is uncalled for. They could just as easily suggest you were pro-incest for supporting what is, in their opinion, a disturbing image. I don't think anyone who loves this book is pro-incest, and I don't think anyone who is disturbed by it must have mother-in-law issues or a son "who could never be good enough," as you say. I think it's just two ways of seeing the same thing, and as we all know, different people tend to see the same thing in different ways. The author's meaning probably would have come across better if the mother didn't always have to "crawl across the floor" and if she didn't sneak up on her son when he was asleep. Why doesn't she hold him in her arms when he's awake? And why does she climb into his window when he's a grown man and asleep? Why not visit him when he needs her, and hold him then? It wouldn't seem so creepy to people, I think, and then his message would come across better. Also, it seems strange that he has to wait until his mother is an old, old woman at the end of his life before he is free to marry and have a family of his own. That seems like he has an unnatural bond to her. Most men don't wait until their mothers are 90 to start their own families. This probably also bothers readers on some subconscious level. I think the author's intention would come out more clearly if he avoided these potentially volatile psychological suggestions.
You've just answered your own question about why so many people and not just adults(!) are creeped out by this story.For a change of pace imgaine how you would feel if it was a FATHER crawling on the floor towards his DAUGHTER'S bed in the middle of the night. Or if he drove across town and climbed into her bedroom? How would people feel about the book then? :|