Hell is eternal because God is infinite?

[RosieLass]

So what? Because I'm talking to someone who's actually open-minded about understanding why I'm an atheist. He's even said he believes it it logical to believe in Christianity, but he's willing to be convinced otherwise. Personal attacks or unnecessarily angry or aggressive responses won't help make my point. This particular issue will never be a mind-changer for him, but I'd still like to be able to explain the rationale behind atheists' rejection of it. Of course, having a rationale in rejecting something implies it's rational to begin with.