Do you think the world will eventually become more peaceful and that crime will go away over time?

it breaks my heart the kind of people out there murder and just plain out mean hurtful people!!! the world needs to get along! i mean every country every person to be respectful and know morals i know this is almost impossible to happen anytime soon but man its a tough world out there my opinion i think rapists and killers should be killed immediately not geting out of jail!! for this would atleast lessen crime! also if the world would eventually become more of a family with the united states and that people wouldn't over populate the world and harm others i think that the world could recover to its horrible state it is now and i cant even imagine how bad it used to be :/ i feel sorry for the animals and people out there that get abused and it needs to stop!! idk if anyone will really read this but i just felt like sharing my feelings with you all!! :) luckily i havent gone through too many problems with my life yet and im still a youngster "16" but i cant help but every day worry about all the peope in the world and most of all my girlfriend the world needs to stick together as a family and friends and i mean every single person!!! no little clicks or religions or races that set apart people!!