Why do doctors have bad handwriting?

I had a doctor once tell me that because he went to school for as long as he did he could write any way he chose. I told him that being that he did indeed go to school for that long he should have also picked up a bit of humility.

I have a friend that when it came close to his graduation from medical school, they actually told him to deliberately make his handwriting, and especially his signature, sloppy. Sloppy is harder to forge.

Bad hand writing just sounds like a good way to disguise screw ups. ~ Just  an opinion ~

One simple answer...they can't spell.