Feeling Sorry for my Boy

As I am writing this, my son is in front of me eating pizza, his favorite food. He asked where his "ate" (sister) is. I told him she is at a friend's house playing with kids. He replied, "Ohhh, I want to play too!" Sometimes I feel sorry for him.  There are certain places I can't bring him with. I feel like he is missing out on lots of fun a typical 7-year old enjoys.  So sad, but then, it is for his own good and for my own sanity.