I have found that if the Murder-hoboing™ is the quicker, safer, easier, funnier, and/or more profitable, then that's what my players choose. So I've been working up ways to make it none of those things to make it less appealing, since it is my fault for make that option viable. I do advocate for a more In-Game Consequences as it does show how the players change the world around them and gives them a stake in how the world is built.