I was raised in a household in which there was a very strong religious identity - but for various reasons not too much actual daily observance of rites and rituals.
My belief is as follows: I believe absolutely in a Creator. (My reasons would bore you.)
I believe that if others need the attendant rituals and observances and it helps them through life and doesn't infringe upon the freedoms and actions of others, then I applaud them.
As for religion in America, I think there is a great deal of difference in religious observance in the big city than there is in the smaller cities. If you drive through a small town on a Sunday morning, you will see scores of churches with parking lots full of cars.
However, that being said, even in a big city the street I live on is in a very mixed neighborhood - mixed ethnically, racially and religion - ly (is there such a word?)

Of the 20 or so houses on my street, only one doesn't attend a house of worship of some kind at least once a week - often more.
I do agree that probably more people have died when religion gets twisted for nefarious purposes, but I also think that if religion was not used for domination, another excuse would be used. I think that religion is the excuse, not the reason.