I guess I find it hard to believe, too; but I'm open to the possibility that the allegations are true. The fact that there are multiple allegations, tends to make it more credible - but sometimes accusers are motivated by the success of others.
Still, I'm tending to think the allegations are true.

When we as a society believe that a person is guilty of a horrible crime, our tendency is to view that individual as worthless, as incapable of doing anything of value. But the facts indicate otherwise. Whether the performer has committed a crime or not, may not have bearing on the quality and value of his performance. Rolf Harris was convicted of child molestation. Must I then refuse to sing his songs? I still like his songs, and I see no reason to change that opinion. I have enjoyed Bill Cosby's comedy sketches, to the point where I think many of them are brilliant. I might even say that I have found wisdom in many things Bill Cosby has said and done over the years - but yet I still believe that it is very possible that he is guilty of having committed the crime of rape many times.

-Joe-