You do you and all that jam, just wanted to state that I find your question: "why do I need to play this game with little sex visions?" extremely silly. What follows is the first line at the top of this page:
Monster Girl Dreams is a text based BFRPG made in Ren'Py.
Why the heck would anyone expect to be showered with sex CG and the likes? Oh, sure, there are a few CGs here and there, but these are recent additions.