This is simply a personal preference thing. Some gamers don't want to control anyone on the field and just call the plays against the cpu, others will only control 1 player the entire play and never switch off and then you have guys like me who like to manually do as much as I can.
From my point of view it's a video game, not a true team sport. I don't want to leave it up to the cpu to control 10 out of the 11 guys on my team. The cpu is ********.
Edit: I didn't know that was a blocked word, lol. I guess I meant to say the cpu is "mentally challenged"