I'll throw my hat in with the folks who are saying to get out early before you find yourself in the midst of a truly debilitating burn-out. That being said, I'

I'll throw my hat in with the folks who are saying to get out early before you find yourself in the midst of a truly debilitating burn-out. That being said, I've worked a couple jobs in the past where I felt similarly to you--one of which I objected to much of what I was working on not only from a utility standpoint, but from a moral/ethical one as well. The only thing that kept me going was the social network I built of similar-minded coworkers. The ability to vent, joke, and commiserate with people who felt the same way I did at the company was extremely cathartic and served as my therapy. I don't think that's a good substitute for getting out and finding something else that you actually enjoy, however, which I eventually did when I realized how it was affecting my mood even outside of work.