You get to meet many new types of doctors...
And probably many more I haven't yet had to meet. Getting old advances your knowledge of the medical field for sure.
Dermatologists
Ophthalmologists
Cardiologists
Gastroenterologists
Urologists
Pulmonologists
Otolaryngologists
Radiologists
Rheumatologists
Anesthesiologists
Oncologists
Nephrologists
And probably many more I haven't yet had to meet. Getting old advances your knowledge of the medical field for sure.