What Is Worship, Anyway?

"I can worship God much better," say some, "outdoors where I see His handiwork than in a stuffy church."  And, I confess, I've thought the same thing on occasion.  But the question is, "Do they worship at the beach, on a mountain trail, on the tennis courts, or driving on a freeway?" Or do folks simply use that as an excuse to avoid going to church?