One of the next roles Ben Affleck would like to play is that of a father. The Oscar winner tells a source: "I want to have a family. I want to have kids. I want to take those steps, and I finally feel ready to do that." Affleck says marriage and children are on his mind because he turns 30 on August 15, and many of his friends have already begun to settle down. Starting a family, he adds, "would be much more satisfying and interesting for me personally than just making movies." But don't count on him walking down the aisle anytime soon. Affleck, who dated Gwyneth Paltrow on and off for a few years, says he's currently "not dating anyone."