I have a DD who's in Kindergarten and she HATES handwriting practice. SHe tries very hard but if it's not perfect, she has to redo it. I think we should teach print and stress neatness. I think cursive should also be taught but let's face it...not all people have perfect, beautifully formed handwriting no matter how hard they try.
I actually recieved a note form my DD's teacher about why I ALLOWED her to turn in a handwriting sheet where the writing was still too big. It was sent home for correction because the letters were too big. My Mom made her redo it and I checked it at home. Still too big so I made her redo it AGAIN. Teacher sent a note home that it was still too big and I should not have sent it in.

Yes, it was still a little too big but every time she wrote smaller, it was too messy. Keep in mind, she spent over 3 hours on the paper and finished it the morning after breakfast then took it to school. The kid had too sleep.
I think that perfection may be the standard but effort should also count. When a child really tries and it's still not perfect, yet perfectly readable and the letters are formed correctly why should they still "fail". Keep the standards reasonable. Readability should be the goal as well as neatness.