I understand the desire to be with your S a to be a SAHM. But staying in a relationship like this is teaching your son that it is okay to treat a woman the way your husband treats you. Yes he is likely to get 50/50 custody, and you would have no input in what your H teaches him (just like now), but he would be seeing a woman, his mother, that refused to be treated that way, and taught that it is wrong to treat a W that way regardless of the finacial benefits a H provides.
I know ideally you'd want to be a SAHM everyday to your son. But that requires a husband that not only supports that finacially, but supports you in all the other ways a B should.
In about as pro-marriage as they come, but what your H has put you through is emotionally abusive.
M(53), W(54),D(19) M-23, T-25 Bomb Drop - Dec.23, 2017 Ring and Piecing since March 2018