We cosleep with our daughter and due to a long nursing strike I'm nearly an exclusive pumper.
We love cosleeping . . . it helps our daughter sleep more soundly and longer. I have to get up at 2 am when I pump, but as long as Daddy's in the bed she won't move a muscle. She likes to snack through the night (usually at 11:30 pm, 2:30 am, and 5:30 am she'll latch on and eat for about 5 minutes before going back to dreamyland).
I believe that cosleeping has been the only thing keeping my production up since dreamfeeding is the only time she'll nurse.
Of course I love just cuddling with her also. I sometimes deprive myself of sleep because I just lay there watching her sleep.