My best friend (she lives in Italy), as she remained jobless to take care of her very old father(now departed), is just now evaluating the opportunity to raise a business with another long-term friend, living in Italy too. Cause of the nature of the business (a catering service), it's impossible for her to raise this business alone. She says: "what about if I get sick, for ex. a 'flu that force me staying home a whole week, and can't prepare the food, can't open the establishment? I sincerely need a business partner". Yes, after having talked with my best friend, I believe the same nature of the business compels people to go into such businesses with friends. As she hasn't no parents, no siblings (both parents and brother departed), no husband, no children, a close and faithful friend is the best option in this case.