Pet peeve: most animals communiate, not just a few. Or do you think those bird calls are for their health?
"my point was, that although the brain is a complex computer and could come up with ideas, that doesn't explain why i exist. chemicals and energy can't come up with me, they just are acted upon, there is nothing there to act."
Which is waaay the heck outside evolutionary theory, which is what you brought up.
You want the "What the hell am I doing here?" aisle.