That makes plenty of sense, Eugine_Nier, but the premise of this whole little exchange (admittedly, several layers up in the comment thread) was that at least some people do care enough to try to save their neighbors, and only refrain because of social norms against being annoyingly evangelical.
In particular violating that social norm would make it harder for them to save themselves.
In particular violating that social norm would make it harder for them to save themselves.