Some Christians read verses like these in the Bible, where Jesus condemns non-believers, and feel that they have to warn non-Christians about their fate.

Most often this is the case in conversations I've had with Christians about this subject. Looking past the details of their belief system, they really seem to be showing genuine concern for me, and where my immortal soul may or may not end up. As the warning passes their lips, though, I can't help but interpret their statements as something akin to "Don't step on that crack! Think of your mother's back!" and I'm beside myself trying to think of a way to quell their emotions without offending them, and say to them, "Well, you really have nothing to worry about, my mother will be fine" and so will my immortal soul, as it were.

Their concern is usually genuine, but unwittingly misplaced, and I don't know how to break it to them lightly.