A man's gotta do what a man's gotta do but all you've done imo is lock in losses. You literally have nothing to lose by hanging on for another five years. Could it go to zero?  Sure, but really what is more likely? Maybe this isn't the $70 home run but you don't think the odds are in favor of growing back to at least $1.00 in five years?  

Buy low, sell high. You've done the opposite. Not too late to change your mind.