I have known a lot of people younger than 70 who just died no matter how healthy they seemed. My own family tends to die youngish from sudden events rather than lingering illness. I also had the experience of the second therapist I was seeing, the one who although in her late 70s kept insisting she had no plans to retire, retire suddenly because her 90+ yr old husband had a major health crisis. It happens. I don't think fear of it should necessarily keep you from a therapist that is otherwise not completely unsatisfactory, but I would like to acknowledge that things happen to people, even therapists, all the time.