A lot of otherwise good, reasonable people, even in the more "secular" states, look down on atheists with disdain. Some are more subtle about it than others.
I say all of this just so younger posters on here are aware of the potential consequences of being open about their current (maybe temporary/maybe lifelong) atheism.
I've never encountered that. Are you old? Or perhaps you work in some kind of profession dominated by lunkheads. In academia I can tell you atheism is normal.
That said, I'm about 7 years out of date - it having been that long since I was last trapped in the Bad Place. Maybe it has changed (there were already plenty such bigots around when I was there, they were just beneath me).