I take my 2 year old daughter to preschool every day on mass transit in SF. And everyday I see a handful of parents in my bus doing the same. Some even have two

I take my 2 year old daughter to preschool every day on mass transit in SF. And everyday I see a handful of parents in my bus doing the same. Some even have two kids. Why do you say mass transit is a non starter for kids? She loves it and I love the time with her and not worrying about parking, accidents, etc.