Honestly, even as a kid I thought it was a little bogus how scientists could claim the earth was billions of years old. Granted, just like any other kid, I loved the forming of the earth and dinosaurs and thought they were magnificent, but even before I knew about creationism I thought it was a little absurd, perhaps arbitrary, that you could stick a date like that to something, especially considering there is no substance in between. It always struck me as odd. And then, I remember the dates would change a few million or billion years depending on the book I read, and that bothered me a little.
I do believe in a young earth, but I'm not adamant about attaching an age to it. Like, I really couldn't care if it's 8,000 years old or closer to a million. It just doesn't make a difference to me. My main beef is someone coming across claiming "this" or "that" as fact.