Hi Mo, agree that you shouldn't respond with an essay as he'll just tear ot apart and argue with you that you're wrong (you're not).
Basically, he treated you, and his DC, like shit, with no love or affection or care, and with a big smirk on his face because he thought he could and you'd put up with it.
I'm not sure how long you've been on MN, but a few years ago there were threads that quite similar by a poster called GettingBig. Similar situation, emotional and financial abuse (and more) where her wants and opinions counted for zero, she was kept penniless while her DH spent on himself. She tried to end it and he claimed he didn't know where this had come from and said he'd change. She gave him another chance and within days he reverted to type and then asked her how much notice she'd give him if she was going to try and leave again
So basically, I am only going to be reasonable when I think you might leave, not because you deserve to be treated with care and consideration as my wife whom I love and respect".
Anyway, bit of a ramble on my part, sorry! But your DP and situation reminds me so much of hers, and hers stayed with me for a long time!
PS I believe she did escape and life was much better 