You owe it to the two of you to get out. You both deserve so much better!
It might even work for him to wake up and smell the coffee but that is not your call.
You have let this man undermine your emotional and physical health (that is not a judgement, I'm stating it as a fact).
You are confused, afraid, exhausted, can't eat....
You and your son need you to be strong, to be there for him, and you. Don't let ANY man undermine you love!
I was in an (emotional, physical etc.) abusive marriage. I got out. My son is 22 and has had such a much better life and upbringing more without his father in it than in it.
I don't even want to think what would have happened if he'd been around. My son would've been a whole different personality.
It's not easy but so much more relaxed and peaceful doing it alone.
Oh, and there's no such thing as a "broken family" (unless social PITAs, as in terrorising neighbourhoods, etc.).
A mother (or father) and children alone = IS a family.
Wishing you all the best and a great future! And it WILL be a great future!
Listen to the wise posters here. Carpe Vinum (they all do) speaks wise words and am loving her amazing analogies.