There’s a church for people like that - the Unitarian Church. Everybody can believe what they want and still come together for church suppers. Mixed marriage couples, like Jewish-Catholic, can raise the kids nominally Christian and the service won’t offend the Jewish parent because the church doesn’t insist on the divinity of Jesus.
The so-called Episcopalian church has become the “high church” version of Unitarianism. No faith, no true beliefs, but the trappings of Christianity retained for the nonbelievers who want pancakes on Shrove Tuesday to go with liberal orthodoxy from the pulpit.
This is why I left the rotting corpse of the episcopal church a few years ago.
I once attended a funeral at a Universalist Unitarian Church. At one point they invited audience members up to share a testimony. I went and mentioned the truth of the Resurrection and Jesus Christ’s role in it and that because of his sacrifice we’d all see the deceased again.
I didn’t realize it prior, but they don’t believe any of that stuff. They looked at me with stunned horror. Like I was a crazy person or something. It was a bit cold at the reception afterward. ;-]