Do you really need to be tall to succeed in baseball?

I just turned 14 last month and im 5'2" I run pretty fast and im pretty strong. I am a shortstop for my middle school's baseball team. Last season had a batting average of .450 I always play 100% every day and practice everyday alone for around an hour minimum ,homever, everyone always says im too short, too small, etc... What is your opinion?