"I... no, not really," Atticus answers, looking almost sheepish to admit it. He doesn't mean to boast (and, Merlin, why does it feel like boasting to simply tell someone you're happy), but his is a rare case in which he is sincerely content with his life and everything in it. "It seems foolish to say, but at the moment, I feel like I'm on track to get everything I've ever wanted. I have a loving family, a beautiful fiancée, a fulfilling job... how could I ask for more?"
In fact, the only thing he can think of that would make him happier is having children of his own someday. But there's plenty of time for that - he and Niamh will have the rest of their lives together, so he doesn't see the need to rush.