So many of the comments here are affirming what I have long observed: much anti-religious sentiment (“much”, not “all”!) is actually a reaction to fundamentalism, which is the bad theology of scriptural literalism, which brings heresies like hating LGBT, insisting the Bible is also a science textbook, superstitious views of certain Middle Eastern lands, and more. Growing up as a mainline Protestant, I thankfully didn…
I grew up fundamentalist, then swung hard atheist, then ended up, as one friend who went to seminary described it, "the most christian atheist he knows". I've known Christians ignorant and intellectual, hateful and openly loving, urban and rural, liberal and conservative, and everything in-between (and these are all independent axes, to be clear).
Here's my take: A healthy faith is not about technicalities, or about finding a system for understanding the physical world or anything like that. If you get obsessed with technicalities you become a bitter fundamentalist; if you get fed-up with religion but stay obsessed with technicalities you become a bitter atheist.
A healthy faith is about people. Yourself, your community, the world. Cultivating habits of forgiveness and growth toward yourself, and openness and love (as well as forgiveness and growth) toward others. Having a specific segment of your life dedicated to contemplation of the most important things in life, and doing so in a community on a regular basis. The iconography and the texts, ideally, are just a communal conduit for those ideas; symbols people can point to and use to talk about their thoughts and feelings around this stuff with others, and also to spark new thoughts and points of discussion.
Many (not all) of my close friends are christians, and none of them have ever tried to convert me (if they were to do that on a regular basis, we wouldn't be close friends). Some of them don't really think hell exists; most of them don't think some magic prayer is all that's needed to keep you out of it; they know that spirituality is a matter of the heart, and the heart isn't so simple. Most, I think, see that even if hell does exist, the best thing they can do for others is simply to love them and to help them be better through example and friendship, if anything. They know they don't control others and they can't force them into anything. They can only be Good and hope that it spreads.
I like this quote from Pope Francis:
> We must meet one another doing good. ‘But I don’t believe, Father, I am an atheist!’ But do good: we will meet one another there.
ADDENDUM: So where has that left me? I don't practice religion, though I read from the occasional religious author and I think spirituality in the broader sense is a useful metaphor for matters surrounding the heart and trying to be a better member of the world. I have really nice conversations, even with religious people, around those subjects. I've been known to go with a friend or relative to the odd church service (as long as it's at a church that's reasonably compatible with the above), and I often get some benefit from it in the form of meditation on myself and my relationship with the world. I've thought about finding a church to join for the sake of community, though I go back and forth on that since I don't believe in even the smallest literal sense (I try to let go of my literalism, but I still have mental habits from the days when I thought it was all about that, both religious and not). Maybe one day I'll find the right church and get past that.