Children, always! No matter how tough it can be, at the end of the day, they are your happiness, a source of unconditional love.
Being in such a bad relationship - that has no good sides. Better being alone, even...but having 3 sweet, yet not so obedient children is better than being alone - to me.
WYR be alone and succesful, or not succesful, but in a good marriage with a bunch of sweet children?