I was outdoors taking pictures of my six-year-old, and it was much more difficult than I expected. Sure, I've taken lots of snapshots before, but I was trying to get "good" pictures, right ones if you know what I mean.
He's rambunctious and very hard to control. No, beating him won't help , but I would miss tons of good shots. It was late afternoon with the good light, but he'd complain the sun hurt his eyes (it was not in his eyes), or he couldn't do this or that, he moved fast, real fast, I got lots of eyes closed, missed the cute shots, and so on.
It made me think that a 60D might not be just for sports. I don't have a studio. Outdoor portraits only for me. Those little kids move fast. I need fast AF and lots of fps to not miss those shots.