Ok then, think about this. Humanity as a whole is really rather horrible. We destroy almost everything we come into contact with, mostly we only think about ourselves and even when we do things for other people, we do it for selfish reasons. You only need to look around at the world today in order to see that we're just not doing it right. Our entire way of life is flawed. Think of all the people who are happy, and then multiply that a couple of times and you'll get the people who are not. Most of us work all our lives to find that which makes us happy only to discover that it can't actually be found.
Now reading that you might think, wow, what a depressing outlook on life. This is true, however I consider myself one of the very few who are truly happy with who they are and where they are going. What saddens me however is that I know most people aren't, and trying to tell them how to be happy is useless, you can't. Happiness isn't something one can simply find, or be given. Happiness is a mindset that has to be discovered by oneself.
So, from my position, there are two possible solutions to ending the sick, cruel reality we live in. #1... end the world, or #2... do what I can to make those I come into contact just a little more positive and happy. #1 is impossible unless I had a few nukes at my disposal, so I'm forced to go with #2. This isn't a problem, I'm more than happy to do it, but it is a daunting task given some of the people I know.
So yes, if there was a shiny red button that will end the world, I would push it, and end the suffering I know is happening all over the world. I leave you with these words. You were given life, you didn't ask for it, but you have it now so make the best of it. Negativity is simply a lack of positivity, if everyone were a little more positive in the way they lived life, the distant dream of world peace might not be that distant.