Keeping Score At Home

Frequently we hear baseball announcers say, "If you're keeping score at home."
My question is, who keeps score at home? People don't keep score at the ballpark these days, never mind keeping score at home.
Games last too long and people don't have the attention span to keep score at home.
When I'm at the ballpark, even the guys in the press box don't have the attention span needed to keep score on their own. Many times you will hear someone say, "What did Helton just do?"
I also find it humorous when broadcasters say, "For you kids at home, notice how he followed through on his swing." Like kids are getting their baseball tips by watching the games. Kids don't watch baseball anymore. Again, it's an attention span thing. Too many kids would rather play video games or ride on their skateboards than watch baseball on television.