Or in other words, is there any human act that is neither good nor evil?

For example: Eating a bowl of cereal.

I would say it is good, because it is a part of human nature to eat food, and a bowl of cereal is food fitting for our bodies. However, another person said that it was neutral, implying it would be silly to suggest otherwise. We didn't get a chance to discuss this further.

Furthermore, Christ said:

"He that is not with me, is against me: and he that gathereth not with me, scattereth." (Matthew 12:30/Luke 11:23)

It seems that by saying this, Christ reveals that the Lord accepts no human act that is ordered towards His glory, and in fact, rejects it. Consider also Revelation 3:16:

But because thou art lukewarm, and neither cold, not hot, I will begin to vomit thee out of my mouth.

Is this an open question, or is it generally accepted either on the part of the magisterium, or the Theologians, that there is no such thing as neutrality of the human act?