How do you feel about this?

So, how do you feel when you see this? The atheist posters are the idea of the British Humanist Association (BHA) and have been supported by prominent atheist Professor Richard Dawkins. Here is what Dawkins had to say about the campaign.

“This campaign to put alternative slogans on London buses will make people think - and thinking is anathema to religion.”

What do we do with this? Do we get angry and try and fight back, or do we use this as Paul would, to point to Christ? Do we tell people about the joy in our life that can only come from Christ and His redemption? Do we inform people that with Christ we have NO WORRIES in our life? How would you respond?