I do it for the sake of keeping my sanity, my novel saved me from a really dark time in my life, I learned to love my characters and they feel real for me... If i never get acknowledged in my lifetime, that blows, but I'll still be happy I was able to make my characters known (provided an afterlife actually exists).
But I feel like I could never forgive myself if I gave up on these dear friends who did so much for me... The world deserves a chance to know them, and they deserve a chance to shine on their own, even if I never get accolades for it...
Don't get me wrong, I dream every day about being well know and recognized, of getting a comic, or gods bless me an anime... But if I don't, I'll know in my heart that I stuck by for what I believed in, and that I did my hardest and best to get there.
We live in a world where every piece of fiction and story out there talks about hopes and dreams, to never lose focus and remain true to ourselves... I guess I'm still a child at heart, and I still believe those stories... If I don't at any point, I know someone else who will be inside my head pulling me up and telling me not to give up, so I'll believe in them instead. ^^