Samantha from that movie was the opposite of a monster. She was a metaphor for a human relationship and even though she betrays Theo in the end, Theo has learned "how to love".
"Well did it work for those people?"
"No. It never does. I mean, these people somehow delude themselves into thinking it might, but... but it might work for us."
My point being, that it’s like someone reading Frankenstein and then thinking it would be a good idea to make a monster of their own.