I was raised Episcopalian and still go to an Episcopal church every few weeks. My parents were never very religious folks. We grew up in the middle of nowhere and I think they looked at going to church every Sunday as a way to socialize with the rest of the folks out there in farm country. I don't particularly believe much of the story of the Bible but I can appreciate many of the lessons that it tries to instill.
These days, I go to church because it was a good way for us to meet people in our neighborhood when we moved in, is a good place for networking and professional development, and I sort of like the 90 minutes of relative solitude and quiet on those Sunday mornings. We also like to get our daughter in the habit of going because once she is a bit older, they have a lot of activities that might be good for her (and many don't seem to have a religious bent to them).