My kids usually have the option of sitting in the car if their dad is there (I drive him home after work), otherwise they're coming with me. I *will* wake them if they're alseep (they usually wake up when I turn the ignition off anyway). My brother once sent my mom's car into the neighbor's yard by simply turning off the emergency brake. My kids could EASILY disengage my emergency brake. That, and the idea of someone hitting my car or STEALING my car while my children are inside it.... no way. Yes, they know not to touch anything, and they know not to even get out of their seats, but I simply don't want to leave it to chance, so they come in with me, unless I'm just pumping gas into the car (because then I can see them, and I pay at the pump anyway).