Surprise! I'm an atheist and do a lot of community service, mainly just helping tutor at my old high school but I also volunteer at a no-kill animal shelter. If I had weekends off and lived in the city, I would want to try working at a soup kitchen but it just isn't in my cards right now.
Being an individual and challenging the established religion is also a big teaching of Christianity but a lot of what I see in church is people following the status quo. The term pastor is derived from sheep herding, how does that set you up to learn and take your own path in your faith.
I've been a part of religious organizations who help the needy. I once traveled to an orphanage in Tijuana. What food we brought came with the message to the kids that if you want to get out of the orphanage you have to love Jesus. People were fine giving up their kids to an orphanage which couldn't provide them enough food everyday because it would guarantee their souls were saved. These people made us, Americans, a feast because we were doing God's work when they could've fed those kids for a week on it. It didn't hit me until after I was stuffed that I just ate a kid's meals for two days in a matter of thirty minutes. Two friends and I put plumbing in a lady's house, built her a receding wall to protect her garden and fixed a leak in her roof. Her response was just a fervent indebtedness to us and it wasn't natural.