No, I don't believe it is a choice. I don't believe in God because I can't.
I was brought up without any faith, by an evangelical atheist father and a lapsed Catholic mother. I was always interested in religion and held "church services" in my bedroom every Sunday for a while. Then decided in my teens that it was all bullshit.
I spent the next few years exploring ideas and pondering possibilities. Looked into various other religions as well as Christianity. Then got put off by some over-zealous evangelicals and walked away for fear of ending up like them. I hated their smug certainty and their belief in the superiority of their faith.
A few years later, I was living overseas and started going to a church again. It was a nice, relatively open-minded community and I liked the idea of having a faith. It felt comforting. I went through the motions for a couple of years and ended up getting baptised. Tbh, though, I never fully believed. I wanted to believe, and I prayed to ask God to give me faith, but the more I read and studied, the more acutely aware I became that it didn't stack up. There was so much that didn't make sense. People went through so much mental gymnastics to try to make sense of all the suffering in the world. None of the arguments were logical. Eventually, I realised that I couldn't keep living a lie, and I admitted to myself that I had never really bought into any of it. I loved the idea of believing, I just couldn't manage it in practice.
I stepped away from the church and I wouldn't ever be able to go back. I didn't make a choice not to believe, I just didn't. I remain interested in religion and spirituality, and I think there is a lot of wisdom in things like Buddhism, which focus more on our response to things in this world than finding salvation in the next.
Ultimately, I think there are elements of truth in all religions, but they are all essentially flawed human attempts to make sense of the world around us, to deal with the problem of death, to find comfort in times of adversity, to exert control over those around us and to explain some the challenges that we face. No religion has all the answers, and I don't react well to people who claim they have found the only true path to God, but insofar as they help people to get through life on a daily basis, then I think that's good and I respect the choices that people make.