I like the earth: it's pretty much my favorite planet. I've got no problem with designating one day a year to celebrate how awesome the earth is... but the current incarnation of Earth Day misses the point completely.
Romans 1:25 They exchanged the truth of God for a lie, and worshiped and served created things rather than the Creator—who is forever praised. Amen.
Instead of modern-day paganism, the magnificence of creation should turn our eyes to our Creator. The earth is awesome because the God who made it is awesome.
The heavens declare the glory of God;
the skies proclaim the work of his hands.
Day after day they pour forth speech;
night after night they display knowledge.
There is no speech or language
where their voice is not heard.
Their voice goes out into all the earth,
their words to the ends of the world.