Christian answering questions too!

[robvalue]

Why should I care if Christianity has any truth to it? What difference do you think it should make to me?

The first thing that comes to mind would be the eternal ramifications of Christianity if what it purports to be true is.

I can expound on that by stating why I should care if atheism, or any other religion for that matter proves to be true.

Okay. So there is heaven and hell. Why should I care? Are you suggesting I start obeying for my own sake?

"Atheism" is a lack of belief in gods, it's not a claim, so it can't "be true". If you mean why should you care if there is no God, I'd say you're wasting an awful lot of your (probably finite) life worrying about things that aren't real, following rules for no reason, and perpetuating baseless oral myths which are extremely divisive and dangerous.