Lightbringer said:
I don't quite see it that way. Close, but not quite.
In essence, I don't regard the Imperium as acknowledging the concept of retirement - only in death does duty end, as the saying goes - but it does acknowledge the changing capabilities of its servants, particularly those who are charged with its defence. I imagine that most servants of the Imperium are more likely to change their duties rather than retire entirely - an Inquisitor may go behind-the-scenes operating at the heart of a web of Acolyte cells, or may turn his or her attentions to researching a particular matter, rather than taking to the field personally, but they won't ever actually stop being Inquisitors until they're dead, at least in theory... they just become less overtly active. Given that there is no specific requirement for how an Inquisitor does the job, or even specifically what the job entails (they have the absolute freedom to combat the enemies of mankind in whatever ways they see fit), choosing to operate differently for a while seems entirely plausible.
As for parenthood, consider this - the renowned Necromundan bounty hunter, Kal Jericho, is the illegitimate son of Lord Helmawr, the Imperial Commander of Necromunda, and Inquisitor Jena Orechiel (who goes by many aliases, including Helena Jericho). As was revealed in the comics where this fact came to light, one of Inquisitor Orechiel's retinue is her daughter.
(make sure it's armed, brother!)