The depression-fixing threshold is smaller that most recreational use, and it would only be once every two weeks. That side effect trivial to rule it out. Educate yourself and stop being a pawn of the drug war.

I watched two documentaries in short succession: Drugs Inc's episode on Ketamine, and a few episodes of Combat Medic. Drug Incs' played up the bladder damage, the persistant dissociative feeling with abusers, and how it's just horse and cat tranquilizer that's no longer used on humans.

Combat Medic non-challantly showed medics giving ketamine to US soldiers in Afghanistan, because it's an effective and immediate anesthetic. They were subtle about it, but it was there. Our the dissonance in the media about drugs like this is indicative of fear mongering and propaganda.