Why do JW's and Unitarians get angry when you actually are able to prove the doctrine of the Trinity?

Amen..... I think the biggest problem is that they don't understand it. That being said, sadly there are also Trinitarians that don't understand it and that's why they are able to fall prey to those that tell them "Jesus prayed to the Father... how do you pray to yourself?"... They are either misled or are misleading others on purpose....