anxiety
"I take diazepam as needed for vertigo and the resulting anxiety--it's incredible!  2.5mg causes me to settle down and completely forget that I was anxious in the first place. I experience no withdrawal symptoms, but then again I take a low dose and only every few days.
My only side effect is intense hunger a few days after taking it--but that's a very small price to pay since now rooms aren't falling and I can sleep without the sensation of my bed swinging!"