You seem to think all MGTOW's are ultimately loners, but that is NOT the essence of MGTOW. It is actually about not allowing women in any way (especially via the state) to have control of you - and the marriage contract (via divorce in our man-hating court system) is the worst way of allowing that control.
You can have relationships with women and indeed everybody else, you just don't take any s**t from them, if they try it you offer them the door...
Now if you REALLY want kids you have to compromise a bit, because you are then open to child support - and women WILL take maximum advantage of that if you are not paying for them as part of a relationship.
The main thing is don't deliberately put yourself in harm's way from a woman - especially by adhering to bulls**t cultural norms like marriage.