I don't know if you are being sarcastic or not, but I will tell you that that exact situation was my life for 20 years. I was a single parent (of twins) and either was in school, or working, and had zero time to date, ever. Between daycare, school, activities, and being a parent, along with the 10 hours a day I had to be at work or school, yeah - dating takes little priority when you have to change diapers, feed a hungry child, helping with homework, or being a shoulder to cry on. Until they become self aware and self sufficient (for short bursts like at 10 years old) you are the only thing keeping them alive. I went 19 years between dates. I took my wife out 4 days before my kids were born for her birthday, and then the next time I went out with a lady, was when they were both in college at the age of 19. You have no idea how things can turn to shit for the best laid plans, and you are stuck trying to make the best of it.
If you have every had your world go to shit so quickly that you are in a tail spin, then you will understand. If you have family, friends, and resources to help you out, then you were lucky. Not every person has those choices. I can relate a lot to the dead mother, as I had family that black-balled me for marrying my ex, my friends all disappeared, and all I had was me, and my kids, and what ever I could put together after she died. There were days I didn't eat because my son/daughter wanted a second PBJ sandwich and that was the last of the jar/slice. I forced myself to be better (college degree and excellent job), and they survived to be adults, and have college degrees and jobs as well. Just because you have not chosen or had the opportunity to live those kinds of stories, that doesn't mean they are not out there.
Not a single person on this planet intentionally picks the worst decision for their self preservation. They just lack the will to make the correct decision, especially when the correct decision is the harder choice to make.