by Turncoat"Sociopaths can care for their families. We don't need proof of that."
I wouldn't mind having some proof of that beyond stories.
"Animals, even the cold blooded ones, feel compelled to protect their young"
Infanticide contradicts this. Male lions are a perfect example.
There's also animals like Turtles that bury their eggs and leave them alone for the wild to feast upon as they approach the waters. There's much of nature that possesses different perspectives on how to treat their young.
"But can sociopaths like someone enough to want to remain loyal despite cash benefits of the betrayal?"
That'd depend on if "sociopaths" are capable of forming attachments or not, and if said "sociopath" does or doesn't enjoy change. Beyond that, there's always the chance that the person they are "loyal" to is more interesting or stimulating than the alternatives they've been presented, and that the loyalty itself is preserved simply from the price of the exchange not being high enough.
"Everyone has a price."
Male lions usually kill cubs that aren't their own, not their own cubs. It's another form of natural selection to make sure it's your genes that are likely to thrive not anothers. If you've killed a male lion you can claim the Alpha male position and make sure your superior genes are the ones being preserved not those of the inferior members of the species.
It's not a perfect system but it's obviously worked.
I'm not saying ALL animals will automatically feel compelled to do this, but thinking about it logically, the animals that felt compelled to look after their young would most likely preserve their genetic legacy. If a being was to leave their child alone to die or kill them then their genes would be lost.
Sociopaths might not be able to love in the same way most others do, but sociopaths could see their children as extensions of themselves and thus want to develop them, even if it's only to suit their own narcissistic drive to feel good about themselves.
But I think the desire to look after young isn't always a fully emotional one, it can be an instinctive one. Even if you don't cry if they die, it's just something you do, and it's not just a societal standard.