I guess that's personal choice. I tend to read WIPS if I know that the chapters are not exactly cliffhangery and they are being consistently updated. Writing is a different story. I just know that I don't write long fics (well, at least not until now) so as far as writing WIP goes, I know I just...can't. It would take the fun out of writing if I knew I'd left half a story hanging there. I would have to complete it compulsively and not being able to would agitate me. So. I'm submitting stuff that are complete or are standalones. And have fun writing. :)