Everard persuades Wanda that joining the Time Patrol is a good idea:
(i) studying prehistoric life on the unpolluted Earth;
(ii) no harm to family;
(iii) secret help you can give them;
(iv) centuries of life (why not millennia or more?);
(v) no illness;
(vi) friendships within the Patrol;
(vii) experiences - the Parthenon, Chrysopolis, pre-Columbian Yellowstone, Nijinsky dancing, Garrick playing Lear, Michelangelo painting.
I wonder whether longevity, perfect health and their different experience of time allow Patrollers to remain human?