children's arguments!

So I'm sure most of you deal with conflict between the children on a daily basis!? Right now I find I am constantly being called to resolve arguments (usually about not sharing toys or not playing a game properly!). I am beginning to think that sometimes I should leave them to resolve their own arguments from time to time.... what do you think?

The arguments tend to happen among the 3 year olds.

Thanks for any responses on this!!