Increasingly I've heard people saying some variation of the statement 'I don't like children'. I don't see why this is in any way acceptable. You wouldn't say that you 'don't like' any other category of person. If I said I didn't like the elderly or middle-aged women as a group, I'd get slapped down, yet somehow people think it's okay to talk about children as if they aren't human beings. Is it because they can't speak or advocate for themselves? Children aren't some kind of homogeneous entity. They have personalities and different temperaments, just as adults do.
Inevitably people will say that it's used as a shorthand for disliking the behaviour of some children, but even so, that’s more of a reflection of poor parenting than anything else.