Lol, I just like throwing ideas out there for many reasons.
To see what other artists think of them.
To see if the artist had the same ideas (good sign that I've learned to think like my fellow 3d modelers, if I can think the same things they've been thinking :p ).
To help push ideas forward and make them better.
I dunno...lots of reasons...but feel free to ignore my incessant ramblings; I can go on forever, for little is ever truly done