Fr0d0, supporting this is the exact opposite of our claims on morality and it would be ignoring what we believe to be true. If we laugh at them, we're not acting like Christians. Truly, we should mourn for them if we actually believe in a concept of hell.
The Lord bless you and keep you; the Lord make his face to shine upon you and be gracious to you; the Lord lift up his countenance upon you and give you peace.