Omnipresence and relationship with God?

Just reflecting on the garden of Eden story. Here's a chunk of it:

Genesis 2:18-20
"The Lord God said, “It is not good for the man to be alone. I will make a helper suitable for him.” Now the Lord God had formed out of the ground all the wild animals and all the birds in the sky. He brought them to the man to see what he would name them; and whatever the man called each living creature, that was its name. So the man gave names to all the livestock, the birds in the sky and all the wild animals. But for the man no suitable helper was found."

Why was the man alone? Wasn't he in the (omni)presence of God all the time? There was no sin blocking him from God. In current evangelical thinking, he should never have known what it was to be alone, he should have been basking in the presence of God and shouldn't have needed anything else.

The man should have had an intimate and personal relationship with God, which should have been fully satisfying. So why was the woman necessary? 

I guess Genesis wasn't written by an evangelical...