It is all to do with serving 100%. The society know that many can't do it because of family responsabilities but those with no ties are encouraged to do all they can. I gave up an apprentaship to regular pioneer because it was put to me what is the point in building a carrer in a dying system.
Iknow. The reason you are expected to be exempary is because you are spending so much more time with the public. Just like a company rep. would have to be red hot when dealing with the public so too with a pioneer.
Everyone who steps down from a position is viewed with extreme skeptasism. They always wonder if you are on your way out.
The society are old hands at this. They know exactly what they are doing as would any worldwide business.