Macmadant
I am currently a design school student, and in my program there are a range of drawing levels. Now obviously everyone can draw within reason because you have to be able to , to even get accepted into the school, because they ask for a minumum of half of your portfolio to be drawing. From what I have seen of my classmates a few ppl have a great eye for design even tho their drawing skils leave a little to be desired, but nobody is flat out horrible. The good news is you are 14 and have plenty of time to increase your drawing skills, and drawing is something that most people can improve upon with practice. You dont have to be the best of drawers , imho, but having some drawing skills will not hurt you and will only improve your marketability as well. Many designers now are called upon to do alot of their own illos, so the more tools you have in your skill set the better. There are times when drawing will come in very handy....doing illustrative logos, doing hand drawn fonts, ...etc. So just get yourself a sketchbook and practice, if you plan to go to a design school you have 3-4 years to work on your drawing which is plenty. Also in our program we have to take 2 drawing classes in your foundation year(your first year in art school and the general year where you are introduced to a variety of mediums and ways of thinking visually and critically), plus there are illustration classes for designers. So you will get some help along the way if you decide to take a formal design education...this is standard at most reputable schools.