Yeah, I do know what it's like to live with someone like that. My 1st husband "claimed" to have back injury and was "in pain" for 8 years of our marriage. The second addict in my life "threatened" me once and I called the cops. He did 3 days in the psych ward and then I did not ALLOW him to come back. And since he was NOT on the lease, my landlord could have him thrown out. You do NOT have to live this way. There are options. Yeah, not pretty. And yeah, you may lose your apartment. But what is worse, losing your life.
For years, in my first marriage I saw no way out. Until I MADE a way. And it was not easy at first.
I gave all the excuses you are giving. Until my 1st husband did something so awful I had to leave. (It involved a SWAT team and our being on the 6 o'clock news)
And like my therapist told me 2 years prior...when you've had enough...you will leave. Hopefully, you won't be dead.