DS at 2 started requesting to learn the violin. He has always loved classical string music. We started lessons the month before he turned 3. We decided not to go with Suzuki but found a wonderful private teacher who seems to be able to get the best out of him. He loves it and is learning to read music, can play the pieces he loves (ie Vivaldi etc) even if it is only a line or 2. We have built practice into our routine (albeit only 10 mins). If he decides not to continue later on that is fine but I think apart from the musical experience the fact that he has to practice something and cope if it is not quite perfect is invaluable. If practice is an issue it can be worth getting sheet music for the type of music they enjoy whether it is star wars, tv themes etc. Makes practice much more interesting.