Every day, good things happen and horrific things happen.
Contrary to the propagandic vitriol of the Nihilist, focusing on the good is not being ignorant to reality.
It is choosing Light over Dark.
If you want to cry and yell and scream over horrific things, there are plenty of places to do it, and plenty of people to help you along on your self-destructive journey.
If you prefer to focus on the good that does exist, check out the “Good News” site every day.
Ignore everything else? No. But the proponents of Logical Positivism (such as myself) have, for the most part, found that anger, bitterness, hate, and the fervent attempt to destroy anyone else’s happiness that some people thrive on leads only, eventually, to harm one’s self, one’s loved ones, and one’s life. Therefore, as a logical being, I choose to (attempt to) rise above such things when possible, and TRY to be happy.
Be a good person, live a good life…try to be happy.
It’s a choice by a moral person, not a demand of a cowardly nature.
Emotional Cowards are those that seek solace in the ephemeral, fleeting, and meaningless because they’re afraid that those are the only things they can depend on. And by the nature of most Nihilists, given how they treat other people, they’re probably right. For them…not for me.
And now, smile! Cute animules!!! 
http://www.huffingtonpost.com/2011/12/16/cat-and-dog-hugging-kissi_n_1154015.html
-Puppy >.< Yip!