I believe, and I don't find it at odds with my scientific understanding of the world. If I stand on top of a mountain and reflect on how that scenery was formed by ancient volcanoes then gouged out by glaciers, the beauty of the scenery still gives me a thrill to what I would describe as being my soul. Is there a scientific reason or function as to why looking at what is scientifically a load of broken rock has such an emotional impact on me?
I identify as being Christian and do attend church regularly enough that the congregation can put my name to my face, but I do see a lot of religious content as being a human and often antiquated view of the world. However, many of the underlying principles are shared by different religions and are good principles for being a decent human being. I'm not arrogant enough to think I have a true belief or one that is superior to others. It's how decent you are, whichever path, religious or otherwise that counts. I had a big think about getting baptised as an adult, and my beliefs and my doubts, but I decided that I did feel comfortable in being baptised as regardless of the literal level of truth, I felt that the teachings of Jesus contained decent wisdom and that I could commit to that, and that it didn't contradict my wider beliefs.
People have done shit things in the name of religion. Hitler, Stalin and Chairman Mao also did shit things as leaders of secular societies. That's the crappier end of human nature, taking on a cause to further your own ends of power, be it dominating the holy land, purging the bourgeoisie or setting the agenda for the PTA 
Science and religion aren't an either/ or. I believe in a creator. I can link that in with the Big Bang. I can accept that our current level of understanding of evolution is a better explanation than a literal interpretation of Adam and Eve. The way that humans manipulate the world is remarkable compared to that of other species. Why would one specifies evolve in such a way so much more successfully than any other? I can still find space for faith there. Why has complex life managed to evolve in such a narrow set of parameters that we haven't yet discovered on any other planet?
I'm happy to link faith to hope, and gratitude in prayer. My mainstream, lay person understanding of science has gaps, and I'm happy for faith and "God" to fill those gaps. If I'm wrong, so what? If my belief in the soul and that it's not wasted, and that there's nothing more of those I've grieved for than my memories of them, so what? So what if my belief is nothing more than a giant security blanket? It's seen me through tough times when hope looked very small, and it reminds me to be grateful for what I have and not to be complacent. That's worth something and so I'll keep on believing even if others find it odd or illogical.