Siblings

One of the things that has been happening in our house lately is the ever-present sibling dynamic. One moment they are cuddling or playing well together; the very next, they are screaming and fighting like mortal enemies. One example is a game they like to play called "Tackle Time" or "Que tiempo es?" (translation: What time is it?). It goes exactly as it sounds: Connor tackles Kaitlynn to the ground, starting with laughter and fun and within minutes escalating to yelling and injuries. It never fails, and it drives us absolutely nuts. Is this another one of those things that we're supposed to miss when the kids are older and out of the house?