Whether he did it or not is not really important. It should not affect his nomination.
Our judicial standard in criminal situations like rape is that people are assumed innocent until proven guilty. This should extend to unsubstantiated claims even in a social sphere.
Ford's claims are credible. There must be an investigation before the nomination process can proceed.
The Democrats don't want Kavanaugh on the Supreme Court. They are using Ford to sink Kavanaugh's nomination.