Mojo gets the choice of sleeping with me or not. In teh summer he chooses not to, too warm I guess. In the fall, winter, spring depending on the warmth of the house he will either sleep with me all night, or lay with me until I go to sleep then get down to sleep elsewhere. Right now I only have a couch in the old apartment which we're both sharing... it's kind of uncomfortable to have us both on the couch at the same time, but it still works out okay.
As far as humanizing? I don't think I humanize my dog by letting him sleep with me. My dog is house broken, stays in a crate during the day, and doesn't even get on the furniture w/o permission if i am already sitting there. (he sits and waits for me to signal if it's okay). I could do far worse by my dog to turn him into an ill mannered wanker than by letting him sleep with me when he chooses to do so.