Mermaids and Mermen love the idea of Mommies and Daddies.
We don't ever know ours, being fish - we're spawned from chance by millions of eggs and sperm being releaesd into the water and then our eggs collect on strands of seaweed.
To have a mommy is a great thing. To be born of her body, to be nurtured, nursed, and to have her loving arms around you mammals as little babies is great.
They deserve our love.