Deleting my land line Phone at home..Good idea?

I have att home phone and and 5 att cell phones for the family. I understand the value of a land line but we make or receive less than 10 calls per month on the home phone and although the home phone is 15.00 it goes up to 28.00 with govt fee's. i just think its a worthless bill.If theres ever an emergency so big that only land lines can make calls then i figure im not gonna get help anyhow .Advice?