No you are not selfish at all---sounds more like fear to me.
It is so hard to trust them.Detachment--sounds good--but not easy to do.
He is right there are hundreds of non narcotic meds out there to try--new ones all the time--I think I tried about all of them LOL---I hope he is taking this seriously-Physical Therapy will be good for him....only time will tell...I hope for your sake all goes well.......