Other than the carriers that charge interest on advances, I've really never understood the notion that going as earned is a better business model.
It reminds me of people that get excited during tax season for their refund.
Having other people hold your money, regardless if its the IRS or a carrier, is not advice I'd give to anyone, regardless of how much money you got in the bank.
I'm with you on this. I don't want the carrier earning interest on my money...I want to earn interest on my money and/or decide what happens with my money.