When I complained to a friend, who has MS, that they were putting me on Solumedrol, she said someone told her other than stopping the inflammation, it stops the risk of more demylination, or plaques. This wasn't from a doctor, but from a physical therapist she knows. So it put in a better frame of mind about taking steroids. If it really stops the another plaque, which once it is there you can't get rid of it, the side effects didn't bother me as much.
I too, don't sleep when on Solumedrol, and when I hurt and just want to rest that is the most annoying thing. So if I can't sleep, I just lay whereever I'm comfortable and read. No sense fighting the insomnia, I know I won't win.
Hope this also helps you put a better spin on Solumedrol when you need it.