Cradle Catholic here but mostly stopped believing when I was about 22. I don’t see how you get around that the promise of eternal life being a central tenet of all of Christianity given Jesus words in all of the gospels as well as bodily resurrection, on top of that you have Paul mentioning it quite often in his epistles … then you have the Apostles Creed and the Nicene Creed. If you don’t care about the afterlife so much, might want to look into Judaism who have differing views on the subject depending on their flavor and individual perspective.