I know its silly, but it bothers me to watch my AQ3D pet running into various walls, curbs, etc. and not stopping. Like this fishing screencapture. Its pretty, good colours, peaceful feeling... then you notice the cat running full steam ahead into the little wall. If it were a real cat it would just jump up there. But, it doesn't have that option.
So, I decided to turn off pets. For now. I will see if I miss having a cat running after me or not. After all, its not real! I think I can manage.