Wise, I understand how you feel. I've seen the things you talked about happen with people I know. The woman would choose her teenage son over the man she married when all the teenage son did was get in trouble. I can't tell any man what our relationship will be like after marriage. I would hope for both our sakes that we wouldn't get married without a lot of prayer and time. The man would need to be around my kids to see if it would work. Its only fair to all parties involved.
As to the having kids, I am content with the two God blessed me with but if I was to get married to someone who wanted a kid and we agreed on it, then physically it is still possible.
Thank you for the reminder that it isn't just my kids and myself who will be making changes but that it affects any man I am blessed with in my life.