Also, why is there no option for "Yes, but I'm not sharing it for reasons other than being embarrassed"?

I second that.

I used to draw a lot (poorly) for fun when I was a kid and I used to draw (crappy) comics all the time (who here remembers newspaper comics?) so it wasn't a leap for me to do manga.

So why don't I share them? Cause they're GONE. I didn't own a scanner for a long time and by the time I got one, I had already quit drawing and all my work was long gone.