An important number of flags that are raised in the main site asks mods to turn questions into CW mode. This is usually due to the fact that those questions do not have one answer, but many. Two recent examples are 62565 and 62608.
I have never done this (other mods do CW-ify, though) because I do not understand why anyone should want to deprive an answerer —to any question— of the symbolic contribution of rep points. That a question admits many answers does not at all mean that providing them has zero cost for the answerer (in terms, say, of effort), nor that some of its answers may end up being more useful to some users —who, in that case, would have motivation to upvote them— and so on and on.
I do understand what's the point of making an answer CW: a user may feel that she herself does not deserve the recognition of rep points coming from upvotes (for example: she may me writing an answer simply as the result of collecting information posted by others in comments) But presumably this would be a decision taken by the author herself and which only affects her. CW-ifying a question deprives others —the ones doing the work, in fact!— of quantifiable recognition, and that is rather different.
Can the frequent «turn this into CW» flaggers explain why they want this?