Why should I believe this world is 50 million years old? All it is is an educated guess, and a weak one at that. I’m supposed to take seriously a scientist’s GUESS at how old the world is? Where’s YOUR scientific proof? This argument between science and creation theory works both ways.
No, sorry. That is not the case.
There is scientific evidence for an old earth; there is no scientific evidence for a young earth.
This is not a case of both arguments being equal; science has multiple lines of confirming evidence. The young earth argument has only a minority interpretation of scripture, and scripture was shown to be horribly wrong concerning the idea of a global flood ca. 4350 years ago.
To overturn the prevailing evidence of science you will have to study multiple fields, and come up with evidence contradicting that obtained by tens of thousands of scientists. So far your colleagues have failed to even dent the mountains of evidence.
By the way, in science the term "theory" does not mean guess. That is the way non-scientists use the term, but they are completely wrong in applying that usage to science.
Psst--4.5 billion years old. You have to go back further than 50 million years just to find the dinosaurs.