It's a burden trying to keep a secret. It's hard. It probably takes more out of you trying to hold it and keep it than it does for you to really let it out.
My parents had us very young. We lived in a modest house. We built forts, we hiked, we went camping and they wanted us to be independent. It's how children grew up in the 1940s and 50s: outside all the time, playing in the dirt, riding your bike around.