Getting Queue Banned For Leaving Intro Bots Game

I think that you shouldn't be queue banned for intro bots. I mean, how does it affect your teammates in any way? I just simply started a game of intro bots since I knew I had little time left and I thought it wouldn't affect my account in any way. The point is, the fact that you would get banned in an intro bot game is so stupid. I would be glad if Riot would remove that. Thank you :D