For a vast majority of Christians, God is just a hobby. They don’t really have a relationship with him, because if they did, they would be like him. Truth be told, they have a relationship with ego- that they think is God, but in reality, is just a projection of themselves.
That’s why their God is just like them. What they hate, God seems to hate. What They love, God seems to love. ‘God’ always seems to agree with them. That’s because they are worshipping an image of themselves that have been projected onto an image that they call God.
And if you challenge them, they become offended and offensive. Because you’re confronting an imagination, and deep down in their subconsciousness, they know it. They are easily offended when their core belief is being challenged.