it's worth it if it saves one life

Sometimes you hear people say "it's worth it if it saves one life". The fact is we often sacrifice safety for convenience. Consider the number of people who day in traffic accidents. We could save MANY lives if we took all vehicles off the roads. In fact, we could just allow emergency vehicles on the roads. Sure you may have to walk 2 hours to work and you may never see your grandmother in BC but it would be worth it right?