And yet ironically suicide is also illegal, and many states don't even have half-way decent right-to-die laws for those with terminal illness.
http://www.everything-game.com personally helped me see more value in life. It actually got me thinking that maybe having children wasn't the worst idea in the world.
Edit: for me personally, I get a lot out of helping people. I try to help people get better jobs and move out to Silicon Valley. I've done this for about half a dozen friends now, and all of them have had a great experience with it. I don't get any financial benefit from it; it's just great to see my friends doing "better" in life and to see them happier / more fulfilled. Same with my exes; I never truly understood why people can be so cruel to people they once loved. I'm happy for any way I've helped people I have loved and I have no desire to try to take anything away from them, even if some of them did shitty things to me. I can only hope that they got something out of it / learned from the bad parts.
So yeah, there's a suggestion for anyone reading this: if you want to try to feel better about being alive, help one of your friends get a better job. Teach them what you know or just help them get their foot in the door if you're in a position to do so.