I've seen people with kids every time I've taken the metro in Paris. It seems pretty normal and no different than doing so on any other metro. I don't even thin

I've seen people with kids every time I've taken the metro in Paris. It seems pretty normal and no different than doing so on any other metro. I don't even think I understand this question. Is there something about the Paris metro that makes it harder than other metros when moving around town with children?