In my experience, that depends entirely on your role.
I've found that my place is within a team of 5<x<20 - it's large enough that I can work on "meta" stuff like workflow improvements and refactoring existing functionality to make it generically applicable where appropriate, but small enough that my contributions are not lost in the noise and I can see the impact I'm having on the team's overall velocity.
If all I were doing every day was implementing yet another CRUD form, then I would feel the same way you've described.
