Premades in casual modes

For future mods, can you maybe NOT allow premades to play casual modes? Its hardly fair if i get stuck with 4 plaeyrs who all chose to play champion X becuase they only wnat ot win and NOT have any fun.

This coming form someone whose had to play with several premades, and its not fun, its not fun to be forced into a game with 4 players who dont care what you think one way or the other, in a CASUAL mode. Even less fun when those plaeyrs not only want to win, but suck every single ounce of fun out of the game for you, like takign all your cs (form jungle camps mainly), stealing kills (by burning flash and burning an ult JSUT so you cant have the ignite kill or soemthing).

All in all, premades = antifun in modes where its mean TO BE FUN.