When my mother and father got together they were both single parents, my mother of one son, my father of 5 sons, they were all doing okay. I appeared and later my younger sister.I also have two ' foster' brothers for want of a bgetter way of putting it. Then my parents split up. My father has never remarried but my mother has had several relationships ( shock horror) and my German step father has six daughters from previous relationships as well as two sets of twins with my mother. They have also now split up. This totals 18 children between them all. Although the majority of the ' children' mentioned are now adults, there are seven very unconfused, very well adjusted children who simply have a very large extended family which they enjoy being part of. It's not being a single parent that is the problem, it's what sort of human being you are in the first place. If you leave your kids and ignore them, that's not good enough. If you have several failed relationships but take your duties as a parent seriously then you'll always rear intelligent, well adjusted children who are worldly but anything but confused.
Before anyone suggests this would make a good Jeremy Kyle episode or soemthing equally insulting, no-one concerned claims or has ever claimed any benefits for the children mentioned and none of us are criminals, drug addicts or self harmers.