Because most anime makers today don't care about making good, not superficial and deep animes, no, most of them create anime just to make fanservice, dumb female caracters; why make a good story when you can have boobs? The worst exemple for me is Fairy Tail, that thing was great, like really, but then, after the seven years ellipse, it became.... horrible. Geez, that's really sad :/ Fortunatly, not all of them are like that, we still find some animes like before