That's not a sneak attack, though. A sneak attack works when you sneak up on someone, or when you have an ally to provide a distraction that allows you to maneuver past their defenses, and you can't maneuver a baseball bat that way - you just don't have enough precise control over a weapon that you can't finesse.
If there were two separate abilities, and one worked when you had surprise and the other worked in combat, then you might have a stronger argument for using any weapon you want during a surprise attack. That doesn't really seem like something that would be limited to Rogues, though.
And it's not my preference. It's the preference of the game designers, who you are paying to provide you with a big long list of how things in the world work. You asked them for the game mechanics necessary to resolve certain situations, and they gave you their answer, and you don't like it. You're free to disagree with them, of course, but that doesn't change what they said.