Why is chemotherapy the most favored treatment for cancer when it so ineffective--shrinking tumors in less than 5 percent of cases?

Chemotherapy is often favored for cancer treatment because it can be effective in targeting rapidly dividing cancer cells and may prolong survival in certain types of cancer, even if tumor shrinkage is minimal. It can also help manage symptoms and improve quality of life for patients. Additionally, it is sometimes used in combination with other therapies, such as surgery or radiation, to enhance overall treatment efficacy. Despite its limitations, chemotherapy remains a critical option due to the complexity and variability of cancer responses to treatment.