There is not only the danger of worshiping the creature more than the Creator but of mistaking the Creator. Your friend assumes that nature is an adequate revelation of God, and that we are capable of comprehending that revelation and responding to it appropriately on our own terms. Both things are false: nature shares in the curse of man's sin and cannot adequately reveal God, and we make no proper responses to Him naturally. Even many of the pagans knew that there was one Creator god, and worshiped him as such. But because they were worshiping an inadequate revelation with inadequate responses, their worship was idolatrous. God has revealed Himself to fallen man in His infallible Word, in Christ; and He has revealed the only adequate response from fallen man to that: He has revealed the worship that is acceptable to Him and it is centered around Christ, the Word. We cannot approach the Creator except by the Redeemer, and except by the appointed means of God's grace to us in the covenant of grace. If we choose to make a different response than the one He has outlined thinking it won't really matter to Him and that we'll be more in tune with Him in our own way, we're only proving that we are natural idolaters, and what we've learned about Him from nature is totally inadequate.

I understand the feelings very, very well, though. Nature is stupendous: I would even disagree that the beauty of God's benevolence is not also displayed there. But the revelation of God in Christ is even more stupendous; the means of grace are designed to help us to see Christ. It sounds like your friend may be more easily excited about the revelation of God as Creator than of God as Redeemer right now. It's easy to do because nature immediately appeals to us in a fully sensible way (we have all the feelings we think we should have in worshiping God, but again if this is not according to His own revelation of Who He is and what He accepts, it's quite worthless: the pagans had grand feelings and thoughts about god also): but sometimes we aren't taught properly what to look for in the means of grace, we aren't taught to be looking for Christ. That can indeed be very dull.

__________________
Heidi
Indianapolis, Indiana

After two days, he will revive us; on the third day he will raise us up, that we may live before him.
Let us know; let us press on to know the LORD; his going out is sure as the dawn; he will come to us as the showers, as the spring rains that water the earth.