This is a terrible thing to say but sometimes i wish they'd keep my other half in, rather than send him home in crisis with only pills and me to stop him killing himself

I hate that i wish him hospitalised, but yesterday was so bad. I had to practically kick the bedroom door through, with him sat behind it to stop him from over dosing. . . . A neighbour hung himself about 2 months back and his gf woke up to find him. It shook me up because i knew it could easily have happened to me. My other half knew how much it got to me and promised me it would never happen. I knew that was a promise he couldn't really make. So yesterday while i was battling to stop his suicide attempt i reminded him of his promise. He laughted in my face and told me oops i lied. It's the second time he has laughted at me while trying to kill himself. He also tells me it's my fault etc, i don't know that i can cope with him much longer when he's in such a state. Why can't they deal with him and not leave us to struggle alone.