Because I have evidence from many sources that point to a universe that is billions of years old.
Do people like yourself ever consider that your dating techniques might not be sound. Meaning that rates of change might have been different back then from now?
just wondering.
Billions and billions of sources, literally (or numerically).
Because details are not what Genesis is all about. You could add the "many generations" clause, but then what else do you want? Molecular attraction theory? Even that the Earth is round. DON'T YOU WONDER WHY GENESIS DOESN'T TELL YOU THAT THE EARTH IS EVEN ROUND? How could it leave out such an important detail like that?
The reason is because Genesis only has a few hundred words to convey it's story. It isn't about giving you comfort to accept scientific Evolution theory, or round earth geography, or heliocentric universe theory.
God and science do not conflict. It's interpretations of the Bible that conflict, just as always been the case between denominations.