This is actually a deep topic and once we start to talk about it, it might lasts for hours..
All religions are based on creating a better humanity and a better world for all people. And yet, we still keep killing each other, fighting with each other, hating each other. We dont learn a lesson from anything so i think religion cant save us. All i know is, the world is getting crazy day by day and we have to end this. Its not that hard to try being a better person for ourselves and others.
Religion indeed can't save us, that's exactly what Jesus has said. Relationship with Him is the only way.