I don't know if you saw it, but Sam Harris, Jordan Peterson and Douglas Murray had a debate about this topic a few years ago: https://www.youtube.com/watch?v=aALsFhZKg-Q

TLDW: we don't know if Peterson is religious or not but he thinks that Christianity must stay. Harris (obviously) is an atheist and thinks religions must go. Now, Douglas is interesting. He's an atheist but thinks that Christianity must stay because much-much worse ideologies would take its place. Peterson and Douglas like to prove their point by pointing to existing ideologies that are already very dangerous.

Personally, I don't have any argument to offer. Since seeing this debate, I thought about this topic a lot but I still didn't come to a conclusion.