What is with the obsession with maturity in anime?

I guess this is just coming with age but why care if anime is “mature”? Or why care how other people view anime? I just sorta watch what I want and that includes children’s anime like Precure, Yu Gi Oh and Buddyfight. There is nothing wrong with anime aimed at an older audience, I have watched and loved many shows like that but I just don’t understand the need to portray anime as a “mature” medium of entertainment. As well my opinion on it is the biggest focus of any form of entertainment is to entertain. But what do you think?