The issue is one of mental stability. He showed the tendancy then, and still shows it now. Nothing has ever intervened - he has never learned his lesson, so to speak, and likely is in even worse shape, given his rise to power, than he was at 21.
With respect, I think you're way off base. This is pure character assassination, and the reason why many good people avoid politics. This is no different than the DUI crap they tried on W just before the 2000 election. This case is 35 yeards old. There's never been any sense, or report of impropriety on his part since then, and the woman is not always right just because she says so..