It is not an opinion, it is a matter of exclusion.
Either the universe is eternal and always existed or it was created.
The only exception to that you carved out is if God created a universe (thus it did NOT always exist) that gave the appearance of being eternal (which would be a lie, or illusion).
It is not my opinion that the God of the Bible created the Universe - it is the description of God given in the Bible.
Or are you implying that God didn't exist prior to the Bibles codification by the Council of Nicaea in 325 AD??