3 year-old boy drowned ...Why?

Checking up on the news this morning I read where a little 3 yr old drowned at one of the worlds largest indoor water parks. The boy drowned yesterday at Kalahari Resorts water park in Sandusky,Ohio. Now, I have question for his parents... Where was your ass when he was drowning? You know stuff like this make me sick because this could have been avoid if the parents would have keep him within arms reach and watch him a little better. I know parents take their kids to these water parks to have fun but you cant get caught up having so much fun that your kid drowns. This is just sad...