These somewhat belligerent replies are why believers need to keep themselves collected and patient at all times. Unfortunately we find a lot of nonbelievers that are on the attack and verbally abusive for no reason. Yes, sometimes believes provoke nonbelievers and that's no way to present yourself or keep a healthy discussion going. Now, not all nonbelievers react in this manner, but unfortunately many do. Further, many nonbelievers are sweet, sincere, highly educated individuals who truly listen and engage in a healthy exchange with believers. Those conversations are beneficial for both sides as we both leave with topics to consider without any anger or resentment. I think whether we are believers or nonbelievers we're all intimated by things we don't understand and in those cases we often fight back when there isn't really any fight occurring. Being a witness for Christ is not easy business and believers need to educate themselves in all facets of their faith so that they can better present themselves to nonbelievers. The faith-based explanation is simply not enough for the adamant nonbeliever (in most cases). Certainly present this aspect, but be prepared for the more finite discussion if you are able. In this world of instant information and instant communication it's more important than ever to increase your knowledge base as angry debates are easily fueled by a google or two.
