I grew up in a loosely Catholic home, meaning we went to Mass and did traditionally Catholic things on Christmas and Easter. My brother and I did First Communion and Confirmation as kids, but went to a public school instead of one of the many local Catholic schools. It never really interested me, it was a thing I had to do because my parents made me. I just got really bored sitting there in church, I'd just look at the art or imagine if the whole building was upside down and I had to walk along the arches in the ceiling.
By the time I was in high school, my parents didn't make us go to church except on Christmas and Easter. There was a ministry group called YoungLife that hosted events and camps for high school kids in the area, and I got involved in that purely for the social stuff. I went to some of the weekend camps, and even one of the week-long camps, as well as joined in with friends who went to the local Presbyterian church. We went to Christian music festivals, Bible studies, all that stuff. Kind of fell out of that when I went off to college. I still held on to some of the beliefs but I wasn't actively involved in any groups or churches.
It wasn't until my early twenties that I started getting involved again, mostly just because I just craved some sort of community. Found a small non denominational church where I really fit. At that time, they were so open and welcoming to everyone, it was a great mix of people. As more people found out about it, more people started coming, and the church moved to a much larger building to accommodate the membership. That was great. . .except that more and more "traditional" families got involved and began pushing for more "traditional" values. It got to the point where many of the people who joined the church because it was accepting no longer felt accepted, where young, single adults were once again treated as being in a "phase" before having inevitable marriage and children.
I was very active there, not just as a member but as a volunteer, and although there are a lot of aspects of the community and music I love and miss, I don't have that faith anymore. There's no actual faith I follow at this point, I don't identify as anything spiritually.