The evidence from multiple different and independent scientific fields, such as evolution, cosmology, physics, astrophysics, astronomy, geology, palaeontology, archaeology, genetics, and statistics. Even some ice cores go back millions of years.
The only people that think the earth is only 6000 years old are religious cultists, who can offer nothing but blind faith, misrepresentation, ignoring obvious evidence, general scientific ignorance, and blatant falsehoods.
No it isn't. It's become pointless giving you the science yet again because you just run away or post nonsense or change the subject.