My sister asked me this question and I told her I didn't know what to say. But now I wish I could have told her as much bad things and evil people out there there is still beauty in humanity. it's no coincidence that nature actually has order, seasons and laws even though it's considered wild. We are all linked in the universe by the same atoms! Every interaction you have made some impression whether you agree with it or not. You=Matter. Try volunteering for a cause you believe in and you'll find better friends and feel good.