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

[RINO Tom]

For one, if you don’t believe in any type of God, actively being mad at it makes you kind of a moron, lol.

[RINO Tom]

As a serious semi-answer to the OP (who doesn't seem to actually want to understand why it might not be ideal to be "hostile" but rather to have those who already agree with him make him feel better about being so...), here is my experience:

Some of my best friends are Atheists, and they are very smart people.  Much smarter than most of the yahoos here.  They all acknowledge a certain horizon of knowledge that none of us can know, and they're all humble enough to admit that there obviously could be some type of intelligence outside of the physical universe (a "God," if you will) and that they could never possibly know if that were the case or not.  After all, the alternative is that the material universe created itself, and that might seem just as unsatisfying to some scientifically minded people, such as one of my favorite physicists, Paul Davies.  This basic humility gives them enough perspective to not be actively "hostile" toward people who are not Atheists, including Christians, and it also allows them the mental capacity to distinguish between the idea of a higher intelligence/first cause of sorts (which would, by all accounts, fit the definition of a "God") and the various descriptions of such a deity by organized religions.