The impact appears vary case to case. Many people report to have issues with feeling left out, forgotten, not as important. Some report that it strengthened their character, and they feel they are more tolerant, understanding people as a result. In Kate Strohm's book she says siblings are 'often overlooked in families struggling to cope'. She gives some practical strategies to help give siblings the attention, care and time they need.
As a result last school holidays Sam and I had a special trip together. We caught a train to the Blue Mountains, bush-walked down the giant staircase and around to Echo Point, stayed in a motel, went up and down the scenic railway and cable car, and bush-walked some more before catching a train back home. Samuel took my old camera and took pictures along the way, and made a scrapbook afterwards with photos and brochures and maps. We had a great time together and he was so excited that he got to come on a special trip with me. It was a wonderful 'adventure' together.