Like many artists, I started drawing at an early age. However, I've been on many hiatuses throughout my life (it hasn't been a constant activity for me my whole life). I find that in the periods I wasn't drawing, it became harder and harder for me to get back into it, or my creativity had dried up.
Now that I've been drawing a LOT more regularly in recent years, I find that I've developed an actual need
to draw. When I'm out doing errands or even when I'm at work, I'm often thinking to myself that I really want to be drawing right now, or I get an artistic idea that I jot down right away for later. Basically the more I draw, the more I nurture that skill and drive as well as nurture my own creativity. Interestingly enough when I read about the artists I admire, they often say they were constantly creating and storytelling as well. So, if anything, drawing isn't just for technical practice, but to keep those creative juices flowing.