I used to have a MacBook ages ago but traded it in for an iMac, which I needed because I design and do a lot of art stuff. But, just on the side, I also write. Some days I just want to sit on the couch and write and thus, I dream of the MacB.
I mean, I do write on my iMac too...it's just not the same. Art and writing are two different crafts and require different settings to get the best work out of each.
Of course, I already spent an arm and leg on my iMac so the MacBook will only be a dream.

Do you just play games on yours? If it's work related, what kind of work do you do? (in general)