I had a clone once. He was an affable, easy-going guy, in spite of his obvious physical repulsiveness. While I thought his impersonation of me was a tad exaggerated, most people thought he nailed it.
All was going well until the day that I imitated him. Copying a copy of yourself does not cause a rip in the fabric of space/time, but it leaves a scorch mark.
My prime self told me that he would not make the same mistake with his clone.