Remember when...

[sfa]

(why do people on cellphones have to talk so loud?)

I know this was a rhetorical question, but there's a real answer--cell phones have no feedback while regular phones do. When you talk on a regular phone you hear your own voice, but you can't hear it when you talk on a cell phone so you talk louder trying to compensate and end up just looking/sounding like an idiot.

Sarah