tl;dr

Single mothers are bad people. The way they act (narcissistic, solipsistic, etc) will cause multi-generational problems to their children and grandchildren and beyond. There is solid scientific evidence for this.

The Science

There is a great Stanford course on Human Behavioral Biology by Robert Sapolsky. There are many good sections, and this segment...:

https://youtu.be/e0WZx7lUOrY?t=1h33m41s (YouTube v=e0WZx7lUOrY?t=1h33m41s).

...comes from the Behavioral Genetics section of the course. Watch a minute or two from 1hr33m41s forward. The point is, bad mothers create bad children, and some of those bad children go on to have children and themselves are bad mothers. The lecture at this point has the lecturer gingerly bringing up that yes, some mothers are good, and some are bad, and then delving into the science behind it.

After a short time in the above video, you will get into terminology and science that may be over your head. If that happens, just watch the course from the start.

The basic idea is that not everything about you is inherited from your parents. A lot of what makes you happy, sad, smart, aggressive, criminal, relaxed, friendly, outgoing, etc comes from environmental factors. The way your mother treats you as a child (and even during gestation) can cause lasting and permanent changes to your body and how your genes express themselves in your body. These changes can be passed on to your children, and the children will never get better.

And then the cycle will repeat in the grandchildren. Single mothers are not just bad people because of what they do to their children, but also what they do to their grandchildren. Let that sink in for a bit.

Lessons Learned

Human behaviour is incredibly complex. It takes a long, long time to learn even the most basic parts. Read the entire sidebar. Watch this entire lecture series. Work out. Be a man. Slay some pussy. Don't try to save the blue pills, but treat them with compassion and respect.