Lots of reasons, but one of them is tweets like this:
The writer of this vile tweet is a writer on the Stephen Colbert show, and has nearly 40,000 followers on Twitter. As the Senate confirmation vote was gearing up, she wanted everyone to know that “whatever happens” she is “just” glad she ruined a man’s life. Never mind if he was innocent, never mind any of the facts or corroborations or shifting stories of his accuser. The important thing to her was ruining his life. That was what mattered.