[Nursie]

Benzos can be deadly if used with opiates or alcohol, as all suppress breathing and in combination can just stop it while the person sleeps. Yes, they are quite addictive if taken recreationally or used frequently for anxiety/sleep. Withdrawal is allegedly worse than opiates and can kill through seizures if done too suddenly. Benzodiazepines are also thought to be carcinogenic to some degree. When used for sleep, benzos will affect sleep quality even though they allow you to go to sleep more easily.

That all said, I have used a few types infrequently for helping to get to sleep and found them absolutely delightful, waking up refreshed and energised (and still somewhat relaxed) the next day.