I hate css, but one of my colleague (who's really good at it) told me once that people have problems with css because they don't study and take it seriously. I.e. I spend so much time reading on new languages and design architectures, but besides some articles here and there I don't study css or take it seriously at all. So yeah, there you have it.

I also think it's getting better. One major problem with css was getting it to work across all browsers, but now if you're lucky enough to only have to support modern versions it's so much easier than it used to be!