I don't understand it: Why am I not confietable with the label "Atheist"

[robvalue]

It can be difficult. Maybe "I'm not interested in religion" would suffice. To be honest, people have no right pestering you for more detail than that. That is what I go with, when someone asks an awkward question and a full discussion doesn't seem appropriate.

Unless you're dealing with someone who knows their stuff, announcing you're an atheist is probably more like to confuse matters. But then a case can be made for explaining exactly what this means, where appropriate. People's ignorance shouldn't be a barrier to communication. It depends on the person and situation.