Eazy....We can use alternatives and also if we keep on using plastic....The whole earth would be destroyed and no life will be able to take place on earth....Do anyone wants that!?!
Also we need to work with earth which will make our future..Do you wants a (bright future)or an(apocolystic future)
Without plastics, Diabetics would not have needles for injecting insulin nor blood sugar testing machines. Intravenous blood and saline bags would not exist. Eye glasses, Including frames and glass would weigh much more, And soft contact lenses would not exist. Catheters for clearing blood vessels and for urination would be nonexistent. There would be no hearing aids, And we would be relegated back to wooden prosthetic legs and metal claws for hands. We would not have items shipped in sterile wrapped packaging, Nor would your doctor be able to wear her disposable gloves when treating us. Much of our other medical equipment also relies on plastic as a part of their makeup.
Our use of plastics in medicine is necessary without a viable replacement.