Granted. Let's take an example of pain that would be decidedly not roundable to zero. Say, 3^^^3 paper cuts, with no further consequences. Still preferable to torture.
(What I'm about to say is I think the same as Jiro has been saying, but I have the impression that you aren't quite responding to what I think Jiro has been saying. So either you're misunderstanding Jiro, in which case another version of the argument might help, or I'm misunderstanding Jiro, in which case I'd be interested in your response to my comments as well as his/hers :-).)
It seems to me pretty obvious that one can construct a scale that goes something like this:
As per a recent comment this thread is meant to voice contrarian opinions, that is anything this community tends not to agree with. Thus I ask you to post your contrarian views and upvote anything you do not agree with based on personal beliefs. Spam and trolling still needs to be downvoted.