Okay, so, getting back to the OP. The negatives against Clipless are "i'm worried that I'll fall." Everyone who uses clibless has fallen once (at least), myself included, and yet we're still here, waxing eloquent about the glories of clipless. Yes, it sucks to fall in clipless pedals, but as you grow accustomed to the feeling of clipless and used to pulling out, it becomes second nature. It's like any other sport that involves non-traditional footwear (hockey, synchronized disco-rollerskating, etc) - eventually you just get used to it.

The pros of clipless vs. platform are evident to anyone who has ever ridden clipless. The clipless vs. toe clips is debatable, for sure, but I personally prefer the feeling of being in my clipless to the fixie to clips i ride occasionally. But not being able to pull up is huge, as other posters mentioned, and if you don't see that, then you're just not riding all that hard, in which case, Clipless probably isn't right for you anyone. I mean, shoot - i have an old Schwinn Chicago SS with platforms that i get groceries on, because it's a flat ride the whole way and i bike with my girlfriend on her old Univega Maxima Una. So Clipless aren't ideal for every situation - but situations that demand efficient, powerful strokes are going to be better resolved with Clipless. End of story. Right? Am I right?

Oh man. I totally effed that dramatic end.