Life matters because God gave it to you and it's something that we're grateful for. God forgave paul after murdering the Christians and testing their faith. If someone tried to test your faith, you believing in him is all that matters. Because he's there for you at all times. Also, some people destroy their own lives due to depression and other mental health issues, and they don't really get help from their issues. So they feel...THAT... can be the solution, although it's not.