If many of the worst kinds of pains are good, then probably pain isn't intrinsically bad.
Many of the worst kinds of pains are good.
So, probably, pain isn't intrinsically bad.
The argument for (2) is based on two different thoughts. The first is a remark that Paul Draper made which was something like that the worst pains we suffer are psychological pains. The second is my thought that many of the worst of the psychological pains are good. For instance, it is good to be pained at the loss of those we love and it is good to feel the pain of guilt for wrongs done (in both cases, it would be terrible not to be pained!).