Amy Poehler says it is “painful” when parents hit the stage where they question if they are “needed” in their children’s lives. The 52-year-old ‘Parks and Recreation’ actress is raising two teen boys – Archie, 15, and 13-year-old Abel – who she has with her actor ex-husband Will Arnett, 54, and has now opened up about her views on the transition mothers and fathers go through as their kids grow. She told People: “That’s a painful process as an adult, as a parent. I relate just to that feeling of, ‘In what way am I needed?’” But despite the transition being “difficult”, Amy added about ultimate…