I dated a man with 2 kids for a little over 5 years. I had a great relationship with 1 and an ok relationship with the other. However with time I loved them both, a lot! When we split it was harder to not have contact with the kids than it was to have ended the relationship. At that point I vowed never, ever to get involved with a man with kids again. However as you get older the chances of meeting a man without children gets more diffucult. Also I do not think have children means you were not responsible. Many people get married, have a child and than get divorced. Also nothing is 100% safe, except masterbation.