It's a hard life if you don't weaken.
What our closest friends do for us is to teach us true selflessness. We learn that while it might be safer for them if we keep them out, true friendship means letting them in. We cannot decide for them what they are willing to suffer with us and for us. While we certainly don't want to see our friends suffer, friendship isn't about protecting each other from pain so much as it is about helping each other to become what God has called us to be.