Going out to eat

I understand that it's easier to split a bill evenly when there is a large group of people going out to eat.  I am always fine with it.  What I am NOT fine with is when people abuse it.  We went out tonight with two other couples.  They all drank heavily; DH and I do not drink at all.  In fact, I had water all night (free!) and DH had one soda (like $1.50!!!).  So when the bill came, and they said it was $120 per couple, I kicked DH under the table.  That is ridiculous, when at least $75 of that $300 bill was in beverages that we didn't even drink!!!!  But we paid it, and either there will not be a next time with these two couples or we get separate checks.  This was just unfair and very, very rude.  I am done ranting.