Hansel & Gretel: Witch Hunters(2013)- User Reviews

First of all, I have to make clear I'm not really rating or criticizing this particular movie and I'd be happy if everybody had fun with it and the directors and producers would reach their goal and I can swear I haven't seen it yet, but I couldn't help but comment something about this new tendency to adopt "classic tales" titles to name any action or horror movie.
Can anyone tell me WHY are directors, producers and actors doing such a thing? Are they frustrated with those tales or something?
Let's see: Snow White, Red Riding Hood...
Don't get me wrong, I love action and horror movies... what I mean is: Can't they come up with new titles (I mean the name of the movies) and let "the children's classics" be "the children's imagination classics" and let big ugly blooded monster and big bad fire spitting gun movies be for big guys like us?
Mean no offense, I just don't know why...