Reading more than one book at a time

I am a one-track-mind person. I can multitask, but given the option I’d rather dedicate myself wholly to one project and then move on upon completion. The same is true for my reading habits. I know of people that can juggle three, four, or more books at a time; still keep things straight and enjoy doing so.

I don’t think I’m capable of this feat. If I start to lose interest in one book and pick up another chances are slim to none that I’m gonna go back and finish the one that is now officially boring in my mind.

Perhaps if it was four books in four different genres I could manage to keep things straight, but even then if one of them was really good I think I’d stay with it until it was over; thereby possibly not doing justice to the other three.

So, all of you multi-book-reading-at-one-time types: how do you do it? Are there benefits that I’m missing out on? Do you feel you finish all started novels in a timely fashion? Is it worth the effort?