Nobody, except the tiniest of children, loves you like your dog does. That deep, unjudging affection is something that can't be bought.
I've had assorted sages and preachermen and priests explain to me why they think there are no dogs in Heaven, and my response has always been very simple, and to the point:
"If there aren't, then I'm not goin' there..."
A time-honored theme, as in The Hunt.