Understandable. I feel your points are very valid and hold substantial amounts of education/common sensibility. I guess all my thing was about was the "hostility" part. Trust me, I get like that at times too.
To (i hate to use this term as it can be considered disrespectful) uneducated people a 'hostile atheist' is just more proof that 'athiests' are evil and bad. It solidifies their beliefs that 'believers' are 'good' and 'nonbelievers' are 'bad'. [[Edit: I took out a sentence here because I thought it was too opinionated and could be taken wrongly. Don't want any of the believers to jump down my throat over such a crass generalization. I do apologize]]
Getting too frustrated, and allowing it to show doesn't help with progress. Not trying to tell you how to conduct yourself. You're totally fine doing whatever you want
Just conversatin'!