The world does not need more children. Having children is selfish. No offense but you should have considered the world you forced your kids to live in before reproducing.
Every time I see a comment like yours I have another kid.
If your parents felt the same way, you wouldn't have been born to enjoy all the good things you enjoyed in life so far.
Not all of us have good lives. Not all of us enjoy life. Better not to begin; once begun, better to finish.
I've felt the same way all too often in the past. In my experience, gratitude is the best cure. Being grateful for hot showers, for tasty food, for a good night's sleep, for anything good or enjoyable really, these have really helped me to change my perspective so that I do enjoy life, I recommend trying it to anyone feeling that way.
US and most of the developed world are already below replacement rate. So having or not having kids is less of an issue than you might think.
Uh, huh. I am a very selfish person. By definition, it runs in the family