“A guy with no will to live isn't worth killing.”
“There are many things worth living for, a few things worth dying for, and nothing worth killing for.”
“Life isn't worth living, unless it is lived for someone else.”
“A dream isn't worth living if you don't have friends to live it with.”
“(...)while it's true that the unexamined life is not worth living, it's also true that the unlived life isn't worth examining.”
“Self-preservation isn't worth it if you can't live with the self you're preserving”