Why can't the truth make you happy? I guess it's not as romantically beautiful as "you can live and be happy for all eternity" and that kind of crap, but just because my life wasn't created by a big invisible man who supposedly loves me very much doesn't mean it isn't beautiful. If you can get past the fact that yes, you will one day cease to exist, you can see there's still a lot to enjoy while you do exist. The truth DOES set me free; more happy and free than people living under their dogmatic belief systems will ever be.