While I do believe that some may be born with minds wired to be PREDISPOSED to artistic fields (like mine; I do believe I was born a creative, as my learning style leans heavily on that side), not all predisposed to artistic fields are... good, at it, or wish to pursue art. And nobody comes out of the womb with a pencil in their hand, either. Everyone, skill-wise, begins the exact same, no matter if your mind naturally works in conjunction with pictures or not; it is those who pursue art that actually get good. To some, they practice all the time, all day every day, and improve quickly, even if they struggle with concepts. For others, the fundamentals of art just make 'sense', and they catch on to it, improving even faster--but it still isn't effortless, and takes years of honing their skills. Everyone just improves at their own pace, and nobody is more or less than the other for improving at a different rate. Not to mention... well, a 12 year old who started drawing at 5, or a 25 year old who started at 16, is likely going to be better than me (a 16 year old) who started at 12. It's just a natural thing to expect. Don't get discouraged because there are people out there better than you; always compare yourself TO yourself--see YOUR personal improvement instead of focusing on others, and though it is difficult to shift your focus, I promise you'll feel a whole lot more confident about your work.
Gotta disagree there, unless you're a person who physically doesn't have hands--everyone can draw, as in, has the potential to. Drawing well isn't the same thing as just plain drawing, either. The reason some people say they 'can't draw' is either because a) they don't have an interest in it and therefore haven't developed the skill (which is fine), b) their mind naturally struggles with visual art (but this does not mean that they cannot learn; for example, my brain HATES colors, but I still work with colors--it just takes more practice), c) they're just frustrated with their work even if it's decent or improving, which happens to everyone, or d) they just... haven't had lots of years to practice yet! Nobody can just hold a pencil and make something right away X'D I mean sure, some find it a bit easier from the start, but if you want to learn art and you put in the time, you're going to learn art. Scientifically, the pathways and skills you use often will become stronger in the brain, while other less-used pathways will become rather weak. If you draw all the time and take steps to improve, even if you struggle with art as a whole and improve very slowly, you will get better and eventually be able to draw. ;w;