Well, I had crooked tooth when I was 10ish. My poor mom decided she would take care of them before they are too hard to mend. She took me to the cosmetic dentist very Wednesday and we went through this long and painful journey and had my 4 teeth straightened. Then when everything is done, my female cousins said, " where are your cute teeth?" My mom almost fainted. I was too young to make a decision.
In short, we Asian, at lease Asians I know, tend to believe that leaving everything the way it is given is the best solution. To make your teeth crooked, none heard of in China. Maybe I am away from home too long?
Qin