Parents can love adopted children just as much as their natural born parents can love them. Amirite?

This.

Sure, it doesn't have to be necessarily their own blood to love them.

Yes absolutely. Once they steal your heart you bet. Only the shallow ones cant. Just because its not "theirs".

Love is when you are aware of a need and you take care of it. A human needs air, water, food, clothing/shelter, and companionship. Legal status might be important, but baby doesn't care about it.