I find this "we're family" stuff absolutely creepy. No relationships are as one-sided as family relationships. You can choose friends and professional partners. You can make terms on the relationship. It is really fucking difficult to leave your family no matter how toxic it is. Cults love to call their members "brother" and "sister" for possibly this very reason. In family you might have unreasonable (or entirely reasonable) expectations and get disappointed if they are not met. In a professional relationship the other person will not tell embarrassing childhood stories from you to complete strangers. And I could go on and on. Why choose to be family if instead you could be professionals. Or Friends.