It is a low investment, low vulnerability sort of thing. Almost everyone can afford to be kind without it costing them emotionally. You can care in a passing way, without sacrificing too much or being vulnerable to expecting anything in return. The universe will take care of you fine.
The oncologists are good at “perhaps,” because they have data and studies and lab results to guide them in navigating the variation of human life and death. But what is their data worth when such a cancer rears up and tears you off your feet? That burns you out like a brush fire; that pulls you under like tidal wave? The hurricane that hit her was not something you could prepare for; nothing anyone did or didn’t do ever mattered. There was no perhaps about what it did to her. It killed her, and quickly.