We get it. Ramsay is pure, unadulterated evil. He has zero redeeming qualities. And because we get that, the show's creators, David Benioff and D.B. Weiss, have backed themselves into a dramatic corner by having Ramsay treat other characters like chew toys.
In some ways, this was inevitable. Part of the fun and anxiety of watching a zeitgeist-chasing water-cooler show like Game of Thrones, Breaking Bad, or The Walking Dead is anticipating the ways the show's creative brain trust will discover new ways to excite, shock, and, yes, occasionally horrify you. The "now top this" quality has been an essential part of GoT's DNA ever since the pilot ended with Jaime Lannister having sex with his sister and shoving wee little Bran off of a tower. "Damn," you probably said to your friend back in the innocent days of 2011. "I can't believe they went there."