The Rhythm Of My Footsteps Crossing Flatlands To Your Door Have Been Silenced Forever...

I recently read somewhere that the ending is never happy. But if that's the case, then what are we living for? I figure it's the happy moments we face along the way and the challenges that make us stronger both inside and out, but it doesn't seem like enough. Am I so selfish that nothing is ever enough for me? Even life isn't enough to satisfy me, and I feel so bad saying this but I'm being honest and my truths are sad.