You know, I have been quick to point out some of the negatives, but there are positives too. Thought it might be helpful for you to understand those too.
It's nice to feel that I have someone else as a backup, so if I get stuck in work or the car breaks down, I know I have someone else who could cook DS a dinner or pick him up from a club etc.
The financial backup too is comforting. Although I am no wealthier living with DP, I do have some sort of financial backup and I know that DP would help me out if I needed it.
It's lovely to know at the end of each day, there is someone to share your day with, someone to cuddle up to.
It's great for DS to have other kids to play with and because he's an only child, it stops him looking to me to be his playmate.
The DSC bring something else positive to my life too. It's nice to have girls to do girly things with.
Above all, I and DS are learning new skills and also learning some things about ourselves as we go along.
My advice, enjoy the freedom of being on your own but also the companionship that dating can bring. Day to day drudgery on its own can take its toll on a relationship, throw in a couple of difficult ex's, some children who are used to different boundaries and discipline and it takes the shine off things. Also, if you can, keep your house and rent it out. This gives you financial security.