First off, not every Disney movie ever features singing, mostly just the cartoons or deliberately kiddie affairs.
Also, this is kind of like complaining that the musical you went to see has singing in it. When you go and see a Disney cartoon or Disney live-action/animation combined feature, especially if there's a U on the box, you should know exactly what you're getting yourself in for. I don't go to see The Sound of Music expecting to see a gritty reenactment of the Nazis rounding people up, I go to see Schindler's list, similarly I don't go to Disney to see an accurate depiction of a pride of lions, I go to Wild at Heart.