One of my grandfathers actually having gone out there as a minister decided he would better serve the people as a doctor. So at a very late age - at the age of 38 in fact - he changed course and decided to become a doctor.
I know there are people who don't like their audience or like the experience of being recognized or celebrated but my audience has been very good - they don't bother me and when they do contact me it's usually on the nicest possible terms.