Oops...
> My guess is that you're probably looking at it through the lens of living in United States.
Well, that is where I live, so that's the lens I have... My experience is that religions tend to settle down as they age. Catholics, while they may have firm belief, tend to keep it to themselves, and not to proselytize. It's more of a culture and ritual than a fervent cause. Protestants, especially Evangelicals, tend to be a bit more vocal. Mormons were killing people not so long ago[1] (though my Mormon friends never tried to convert me). Scientologists are just insane. Our older religions are, on average, more peaceful and benign.
I don't know where you live or grew up, so I can't guess at your experience with religion.
[1] https://en.wikipedia.org/wiki/Mountain_Meadows_massacre