I was raised religious (catholic), and kind of believed in it. And then when I was 18-20 I spent a lot of time and effort to rid myself of religion, and have been living happy and free ever since. I still enjoy the occasional mass (once or twice a year), mainly because I like to sing.

I have not taught my kids any kind of religion or spirituality, and they don't seem to miss it. I wanted to spare them the effort of getting out of it later. What I hadn't anticipated is that as a result, they are pretty ignorant of most things, they have little idea who Jesus or Mary are, etc. (We tell them about it sometimes, of course, but it's very different than going to Sunday School for 10 years).