Now here is something for all you kiddos who like to think.
http://www.casualgirlgamer.com/articles/entry/48/Another-20-games-that-make-you-think-about-life/
20 games, all with messages about life. Some can be depression, or old age, or even lightness and enlightenment.
I've only played the first game. And just downloaded "and everything started to fail"
Most of the games have interest concepts. Regardless, have fun, and ponder. Ponder hard.