Imagine this! You come home from a hard days work and waiting lovingly at home for you is the dinosaur you've been happily married to for the past 10 or so years. Your dinosaur has prepared your meal like the loving dinosaur she is and pampers you like a spoiled child. You can talk to her just about anything. She doesn't complain and whine to you about how sad and pathetic her life is since she got married. She doesn't gossip about the neighbors, family and friends. She's simply quite content kicking it in the backyard gnawing on the trees or devouring smaller dinosaurs she's chased around. (Dependant on carnivore or herbivore of course)
Yep! Life would be pretty fucking sweet with a dinosaur.
And the sex wouldn't be bad either.