Dodging and you

So I have a random question for the masses, Why do you dodge? Everyone has done it once or twice or an indefinite amount of times. I personally dodge if i get paired up with someone I played with previously who is not very good or when someone on my team bans my pick. I try to avoid dodging as it is aggravating to other players but there are situations where it is unavoidable. I think there should be a timer from when you last dodged and when your "first dodge of the day" timer resets. Its almost necessary to dodge if you are trying to climb because the free to play nature of the game and to avoid smurfs and boosters. There is no way for rito to regulate the millions of accounts that are played on and a lot of toxic players just have multiple accounts they can get reported on.