I save all my drawing so, in a few some years in the future, when I become an experienced artist, I'll have something to illustrate my words like "when I started, it was a complete disaster" with.
Besides, for me, it's sometimes interesting to see how an artist progressed and what (s)he has drawn before, so, just in case someone would be interested in my work, it would be there.
...yes, I have dreams.