Yes, no, maybe?
You do not have the right to off yourself because your classmates are bullies, or your mom died, or other forms of depression. I'm assuming that depression-induced suicide is not the point of the question. Then again, maybe it's natural selection. If you can't face words, much less sticks and stones, what good are you to society?
Pain and suffering during terminal illness, and just getting it over with, I can understand the desire to say, "Make it stop! You'd shoot me if I were a horse, wouldn't you?" Now we're talking assisted suicide, because someone in that condition is generally unable to fulfill the desire themselves. But that decision is obviously irreversible, and having the medical community try to set standards for when it's OK and when it's not only invites situations where maybe beds are needed, and this particular patient, while not 100% terminal, does not have a good prognosis, and maybe is uninsured, so the doctor will "rule" that euthenasia is appropriate, in reality as an economic consideration rather than a medical one. Now, we all trust our doctors, don't we???? But that much???
Right now, the best we have for those conditions is a DNR, do-not-resuscitate. Pain meds as needed for maximum possible comfort while everyone waits, as was the situation with my dad when he passed.
The "noble" suicide, the "honorable way out" of the sort you read about in Oriental stories, a defeated warlord falling on his sword, a captured criminal avoiding prosecution and punishment. That's just easy outs for people that should be facing the music.