[OT...sort of]Hardcopy or electronic books?

I'm curious to know what people think about hardcopy documentation verses electronic form. For most purposes, such as simply looking things up, I prefer electronic form. For books which are intended to be read from start to finish, or at least large section are intended to be read as a whole, I prefer hardcopy. I find that e-books tend to collect e-dust when I have only an electronic version. Anybody else have a similar experience? Steven