When practicing, I like to practice. If I shank a tee shot, I don't always play it. If I want to practice saving par, I will, but I believe it's important to feel what it's like to throw shots correctly.
If everytime I practiced, I was just happy with shanks and overturning discs, I would be practicing how to thow shanks and overturning discs.
I'm not a fan of field work, so I refine my tee shots on the course.