To achieve an end, one employs means.
The "mean"s are "mean"ingful to achieve the int"end"ed "end".
To question the end is not meaningful within the context of the means. To question whether to bring up a child is a valid question, but an invalid one when you are seeking to find out what the best way to bring up a child (whether corporal punishment is a valid technique for educating a child or not).
There is a hierarchy of ends. Each end can be a means for a wider/bigger end.
Questioning must be careful. If somebody is discussing ways to be good, to question his beliefs about goodness is uncalled for. Or is it?
Relentless questioning, moving from end to higher end, will establish all intermediate ends as "merely" means, and therefore subjective strategies to achieve a goal.
(to be continued)