I want to know....What age did you ladies get married? And how long were you dating before the big commitment❗️❤️

I'm asking this because it's been bothering me that everyone says 20 and 21 is too young to get married. Why is it expected to have your whole life together before getting married? I thought the point of marriage is to Grow together through the bad and good times... Correct me if I'm wrong because I've never been married but this is how I look at it... 
If you found the one... Why wait? What's your opinion?