i am worshipping the sun god today

The sun is both giver of life and taker of life. The sun is the source that makes life possible and impossible. We know from science that the sun has shone for about 5 billon years and will shine for about 5, 6, or 7 billion years, if the scientists are right. So, if the scienits are right, you could also ignore the sun. But nonetheless, you worship the sun. Is it because of the fact that we can not be sure that scientists are right? Or are there other reasons? And, if so, which reasons?