Religion does not really save someone. It is having faith in what you believe in that can really save you
And again save you from what? Death?
Remember that Death is inevitable, what happens after that? Nothing.
Death may be prevented within the century, but religion will have nothing to do with it.
https://www.extremetech.com/extreme/265609-startup-nectome-wants-back-mind-first-killPlenty of scientists, researchers and startups are working on brain preservation. I'm sure this will bring about new religious ideologies and philosophies. People have to find meaning and purpose somehow.