To everyone saying they want to be tall. You are foolish, I am sorry, but you are. I am personally 6'10'', and most people who grow that tall have very serious back problems. Not just because of weight, but because your skeltal structure forms in weird ways the taller you are.
However, I voted that size doesn't matter, because it honestly doesn't. Certain people who grow to my height don't have too many problems, and being short is fun to (mainly because hide n' seek became impossible for me to play when I hit 6'2''). Don't get me wrong, I wouldn't trade my heigh for anything, it has helped me through much of my life.
Also, if you think being tall means you won't get picked on, or antagonized, you're wrong. People are stupid, and no matter how much strength you gain while growing, some people will not get the message that you could crush their heads like grapes (speaking from experience).