Why is it wrong to have a hostile view towards God and Christianity?

[John Dule]

There's nothing wrong with this (in fact, it's correct), but the challenge is to prevent our hatred of the institution from spilling over into hatred of its followers. It's a known fact that antagonizing cult members only alienates them more, driving them deeper into the security of their group. Our job is to treat them with respect while simultaneously rejecting their views, beliefs, and attacks on personal freedom wholesale. We must also try to recognize when a belief crosses over from being benignly silly (most Christian denominations) into being actively harmful to its members and civilized society as a whole (Evangelical Christianity).

[John Dule]

LOL.

Imagine being "hostile" toward a non-existent entity. 

That's like me being "hostile" and "angry" toward a can of Spaghetti-O's. 

It is quite illogical, and makes no sense.

So, either God is an inanimate object, or Spaghetti-O's are a work of fiction and don't exist.

Your analogy makes no sense.

vitoNova is well-known for typing faster than he can think.