As a group, religions are wonderful.
Religion gives community. In today's society of isolation, it's beautiful to go to mass and have community. It's arguable that America's division today is caused by its increasing secularism. When I was struggling with hating white peoole, I would ask people for advice. The atheists said things like,"it's okay to hate us, it's understandable" as if living in a hate filled existence is ok and helpful. The theists today me to forgive them so I could move on. Guess who was right?
A large amount (majority? Not going to make an ass of myswlf and assume here) of charities in the US are religious based. Most orphanages are religious based. Priests and nuns help the dying. While it's true you can offer help to people outside of religion, it's also true that by pure numbers, religious organizations offer the easiest access to charity. Go to a volunteer group and I bet you at least half are Christian. That says something.
Despite what many atheists say, human beings are in a way hard wired to respond to matters of religion and something more than the material. Religion offers an outlet for this in terms of theological expression.
In World War II, the Catholic Church saved millions of Jews lives.
https://en.m.wikipedia.org/wiki/Rescue_of_Jews_by_Catholics_during_the_Holocaust But going by what Wrath said, it offers nothing.
Having a religion also requires hard time examining ones self. In modern individual society, which stresses emphasis on the individual above all else, this is valuable. I have a lot of flaws, many shown on this very page (have a problem with anger) and religion gives me reason to soften them. In today's society of "gotta get mine" we have breeder a society of selfish domination. Community doesn't matter. What matters most of all is me. Religion goes outside of this.
To say that religion offers nothing towards groups is an extreme opinion. But I don't blame wrath as he's in Saudi Arabia which is a theocracy and Islam in particular is a religion of law, not belief. And when your religion is ultimately just a list of rules....well.
Although I agree with the bulk of your post Etiolate, your definition of faith, at least theologically, and I hope this doesn't offend, is kind of simplistic. It renders faith as "all you gotta do is believe". Faith is not something that you just believe in. It's an ongoing relationship. Faith is actually really hard; it isn't easy.
And quite honestly the biggest case for religion is Bill Nye's My Sex Junk.
VIDEO If there's anything this video teaches, it's that we need religion.