No husband is definitely preferable to an abusive one. But still, the single mother thing does suck. At 14 it is time for the long journey towards taking responsibility for himself. It is not easy for parent or child. I think the hardest part is knowing when to give them rope and when you rein them in. More and more they start needing to make their own decisions and suffer their own consequences, but they still need and want boundaries. And one day they act like they are 3 and the next day 30. And it even changes from moment to moment.
I think the best way of thinking about these difficult years is as a series of letting go and teaching them responsibility. Barbara Coloroso has written a series of books that are very common sense approaches to parenting. Well worth reading (if you can ever find the time!!! some titles are "Parenting through Crisis", The Bully the Bullied and the Bystander", Kids are Worth it!" and "Just because it's not Wrong Doesn't Make it Right"
She talks a lot about "natural consequences" You don't punish the child, you force them into natural consequences. For example, the laundry. I had a similar problem when my sons were 12 and 13. I would wash they clothes and put fold them into a wash basket. They were to put them away and give me the dirty wash at the end of the week. I kept seeing the same clothes in the wash and when I saw the same shorts 2 weeks in a row in the middle of winter, I lost it. I told them how hard I worked to both work and keep things clean and told them that, as far as I could tell, they were just wearing clothes out of the basket and making me wash clean clothes along with the dirty ones they put back into the basket and that because of that I would NEVER wash their clothes again. I showed them how to wash their clothes and I never again touched any of their clothes until the oldest was 32 and I was visiting and I threw a few of his clothes in with mine and put them away when they were dry. Natural consequences. Extreme? I don't think so. they were old enough to learn to take responsibility for their own clothes and if they didn't do it they wouldn't have clean clothes to wear. And later, their late teens, when I could afford a housekeeper twice a month, they wouldn't LET her wash their clothes.