Is there a Hell ?

OK, let's ( for the sake of argument ) assume there is a Heaven and a Hell.
Who goes to Hell?
Well, probably really bad, bad, BAD guys. OK?
But who made them bad? Can't be their parents, else then Hell is full of Parents all the way back to the original parents, aka Adam and Eve. Cause according to the Bible, one of their kids was a bad, bad, BAD guy. Cain and Able. Remember that story?
So, they must have made themselves bad. Free Will and all that.
So the Parents are probably in Heaven.
HOWEVER, Heaven is all happiness, all the time, no tears allowed, and how many Mom's wouldn't miss one of their kids if they were in Heaven?
They'd cry at least once, knowing that their kid was down in Hell.
So, with people willing to forgive the most heinous crimes, (Mothers in Uganda forgiving the soldiers who killed their husbands and children), surely God must be willing to forgive.
So, it seems that perhaps there is NO One in Hell... or everyone is in Hell.

So... who knows if there really is a Heaven or a Hell?