Callahan's Crosstime Saloon (Callahan's Place Trilogy, #1)

by Spider Robinson

Outside are hatred, competition, morals elevated to the status of ethics, prejudices elevated to the status of morals, whims elevated to the status of prejudices, all things with which I am wearily familiar, the classic symptoms of disease.

A man or woman who's afraid of dying will either decide to believe in an afterlife... or have children, so that something of himself or herself will live on.

yup