i haven't SG-U intensely...but it seemed to me that there's a part of Greer that almost seems suicidal...why he's willing to jump right in with the kidney donation -- and NOT getting painmedicine, at least for the painful test.
I don't think of Greer as suicidal. He just wants to get done whatever needs to be done without any consideration for self-preservation.
Maybe it's not a healthy state of mind, but it's also not suicidal.