I think unending excruciating physical pain would be a good enough reason to commit suicide. Right now, the Drug Warriors, along with their M.D. fellow travelers, are attempting to restrict access to opioids, not only for folks who could get by on something else, but for people with chronic, excruciating pain which only responds to such things as opioids, heroin, etc. These allegedly well-meaning folks are going to be responsible for a rash of suicides.
As for the subject at hand, it is probably best to let God be the judge, since He is the only perfect one among us, save for his Son and the Holy Spirit.