Stop the arguing. If a parent chooses to have their kid play against kids over 12 months younger, often closer to 24 months younger then they are losers and in the end their kids will be losers as well. You get better in life at everything by working with people better than you, not worse than you. Be better than the kids your age and then work to be better than the older kids. Stop removing obstacles for your kids. Someday you wont be around and they wont know how to deal with adversity without you.