Life, existence is the best creation of Satan, so well engineered, mostly pain with a few scraps of hapiness in between, everything planed to the smallest detail, like the week, 5 days of wage-slavery and 2 of "rest" (chores for home, clothes, buying food, cleaning...) a maliciously 'perfect' calculation of how much to press/torture beings without breaking too many of them.
Parents procreate in their best moment, in their early 20s after happy parties, university fun, the first job which is exciting, but before they realize and experience they are trapped in 40 years of wage-slavery, likewise they bring babies before having experiences with death, they haven't watched their parents die in front of them yet, and their own bodies haven't begun to deteriorate.
Life beautiful? A sunset, so 'nice' for you, for others thousands of animals it means danger, fear, terror of the predators of night who will awake soon to eat them alive. It may mean death by cold, or hunger of a baby bird whose parents were killed and won't return to feed him.
I recommend reading this
http://theophiledegiraud.e-monsite....ist-manifesto-raw-translation-by-google-1.pdf
and this
https://drive.google.com/file/d/0B8owK7WpBz7WN1AtMDhybDJHcFE/view?usp=sharing
to understand the great world we live in