I think because since it's vector based people get intimidated ( including me ) but my brother works with it all the time and he says it's really not that hard to understand.
It isn't; it's actually easier because it's so much more easy to go back and edit things without subtracting from the picture like a raster program. The resize quality is almost flawless, too (with maybe some adjustment to the points)
Kind of sad Adobe bought them out. No more Freehand. Oh well.