KARMA is what will happen. I've seen it so much in the past 13 years (watch Vile Pervert for free on
www.VilePervert.com).
The bile inside these poor people eventually burns the donor; be it physically (strokes, heart attacks, cancer)... emotionally or practically (do check out Waxie Maxie, Flame Mitchell, CuRt and other characters in the film).
Those who want others to burn in hell, inevitably burn in hell themselves. Which is why I wouldn't wish it on anyone.