Because some people don't have the money to. Government aid isn't given out like candy, and it doesn't cover everything.
I don't have a good enough insurance for oral surgery I need on my wisdom tooth. My daughter is fully covered, I am not. I have an abcessed tooth I'm currently treating with natural medicine. I'll continue to do so until I can afford the oral care. If I don't have to put my family in debt more so than we already are, I'm not going to. Especially when garlic, salt water and green tea is clearing it up beautifully. I will eventually need to go through with the surgery because the tooth is impacted, but I can hold off until we get in a more secure financial situation. Sure, life is more important than money, but unfortunately, in this world, if you don't have money, you live on the streets, and I've been there already for a short time, I won't dare let my daughter. Unless you know how it feels to be poor, you shouldn't judge others who fear it.
Antibiotics are not always the answer either. Today people are so overly medicated, antibiotics are no longer having the same effect. People are needing to take increased amounts or a different form of it. If someone has a mild illness with no warning signs, and no underlying conditions, they should use natural cures first. We would have healthier people in this world. Prescription drugs have more side effects than benefits. They should only be taken when absolutely necessary.
Besides that, there are MANY forms of staph. Right now, you have staph bacteria on your body, and so do I. When we get a cut the bacteria can get inside and spread. Then if someone else contacts this area or something that touched this area, it can spread to them without ever having to cut themselves.
When someone's immune system is low, then this bacteria can get out of control without any warning. That's when it's severe because the body's natural defense system is down and it cannot eliminate the bacteria alone. That's why it's very important to keep balance in your body through what you eat and include immune boosting foods with vitamin C. Your "bff" must not be 100% healthy or isn't taking care of him/herself well. I would suggest a TCM practioner to find the imbalance in his/her body so it doesn't repeat. My uncle was one (as well as a nutrition specialist) and he helped countless people, including myself.