My only reason is pride and for the lesson. It comes down to if you think every kid on every team should get a trophy or if the kid should have to work hard and earn it. I'm in the latter group.
Well, bully for you, but your convictions are nonsensical under the circumstances. Again, why should we turn down an invite that we "didn't earn" so that some other team that "didn't earn" an invite could take our place?