This guy tried to strangle you in your own home, and you think he makes you feel "safe and protected."
There is a disconnect here. He ONCE made you feel safe and protected, and, like a gambler still chasing that early "win" you keep throwing your money into the pot and losing.
I do hope you talk to a domestic violence counselor. You are in a dangerous situation. I worked in the DV field for many years, and trust me, your safety is at risk. You need to know how to plan to escape safely if you need to.
I'd also suggest you attend some regular Al-Anon meetings for help in dealing with your current alcoholic relationship.
Hugs, please stick around,