I seem entirely immune to benzos. For a decade my prescribed dose of Xanax was 10 mg per day (yes, TEN, lest you think I forgot a decimal point). Even 10 mg daily did little to nothing. To see if any dose would work I tried 120 mg once and that gave me a 5 hour nap, waking up feeling same as usual afterwards. In case you are wondering, nope, I didn't throw up nor did I feel sick at all.
That 120 mg was not a suicide attempt. I really just wanted to know if any amount would do anything to calm me down. When I took it I knew the LD50 for Xanax was so sky high that it would take many thousands of pills to die, so I damn well knew 60 bars wouldn't not cause any harm.
A hell of a lot of suicide victims do have benzos in them, though the benzo played only a minor role in their death, if it played a role at all. And it's not at all likely that you will die by alcohol poisoning. How many suicides by alcohol can you point to? I only know of one alcohol suicide and that would be Vern Troyer (Mini Me).