Time does exist, since its just a word we created to define a feeling that things keep moving on. We age and get old, life comes up and down, and plants rotate. Your trying to look at time as a sense that if there wasn't a being smart enough such as ourselves to realize these changes then time wouldn't exist. It wouldn't, becuase no one would be able to understand it. But since we are of higher intelligence we realize a sense of time, space, age, death, etc.